Bridging Your Innovations to RealitiesIntegrated Solution System for Bridge and Civil Structures
MIDAS Program ApplicationsNastran FX                                                                    midas CivilTotal S...
Headquarters         Branch Offices   Sales Office                                                                        ...
01. Innovative user interface       midas            Civil    Bridging Your Innovations to Realities                      ...
01. Innovative user interface           midas                  Civil      Bridging Your Innovations to Realities          ...
02. Optimal solutions for bridges       midas              Civil    Bridging Your Innovations to Realities                ...
02. Optimal solutions for bridges           midas                  Civil      Bridging Your Innovations to Realities      ...
02. Optimal solutions for bridges       midas              Civil    Bridging Your Innovations to Realities                ...
03. PSC bridge design           midas                  Civil      Bridging Your Innovations to Realities                  ...
03. PSC bridge design     midas           Civil Bridging Your Innovations to Realities                                    ...
03. PSC bridge design           midas                  Civil      Bridging Your Innovations to Realities                  ...
03. PSC bridge design     midas              Civil Bridging Your Innovations to Realities                                 ...
04. Cable bridge analysis           midas                  Civil      Bridging Your Innovations to Realities              ...
04. Cable bridge analysis          midas             Civil Bridging Your Innovations to Realities                         ...
04. Cable bridge analysis           midas                  Civil      Bridging Your Innovations to Realities              ...
04. Cable bridge analysis       midas             Civil Bridging Your Innovations to Realities                            ...
05. Nonlinear analysis                             midas              Bridging Your Innovations to Realities              ...
05. Nonlinear analysis     midas            Civil Bridging Your Innovations to Realities                                  ...
05. Nonlinear analysis           midas                  Civil      Bridging Your Innovations to Realities                 ...
05. Nonlinear analysis     midas              Civil Bridging Your Innovations to Realities                                ...
05. Nonlinear analysis           midas                  Civil     Bridging Your Innovations to Realities                  ...
05. Nonlinear analysis     midas              Civil Bridging Your Innovations to Realities                                ...
Midas civil catalog
Midas civil catalog
Midas civil catalog
Midas civil catalog
Midas civil catalog
Midas civil catalog
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Midas civil catalog

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An introduction about capacities and features of midas Civil: an integrated solution software for bridge and civil engineering

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Midas civil catalog

  1. 1. Bridging Your Innovations to RealitiesIntegrated Solution System for Bridge and Civil Structures
  2. 2. MIDAS Program ApplicationsNastran FX midas CivilTotal Solution for Integrated Solution System forTrue Analysis-Driven Design Bridge and Civil Structuresmidas FX+ midas FEAGeneral Pre & Post Processor Advanced Nonlinear andfor Finite Element Analysis Detail Analysis System midas Abutment Abutment Automatic Burj Khalifa (UAE) Design System World’s tallest building to date Height: 800 m, 160 floors Mechanical Bridge midas Pier Pier Automatic Design System midas Deck Pier Automatic Design Systemmidas Gen midas GTSIntegrated Design System for Geotechnical andBuilding and General Structures Tunnel analysis System Beijing Olympic Stadium (CHINA) Area: 78,000 sq. m. Building Geotechnical Allowed Capacity: 91,000 peoplemidas Building midas GeoXA revolutionary building specific Temporary shoring & Settlementdesign system with auto-drafting analysis System for Excavationmodules Soil+midas ADS (CTC in Japan)Shear wall type BuildingDesign Systemmidas SDSSlab & basemat Design Sutong Bridge (CHINA)System World’s longest cable stayed bridge to date Total span: 8,206 mmidas SetStructural engineer’s tools
  3. 3. Headquarters Branch Offices Sales Office MIDAS IT Russia China (Seoul) Japan Lithuania USA (Beijing) (Tokyo) (New York) TNO DIANA Shenyang Seattle (Netherlands) Slovenia India Sacramento New Jersey Spain Italy Turkey (Mumbai) Chengdu Shanghai Guangzhou Taiwan UAE KOZO KEIKAKU ENGINEERING Puerto Rico Vietnam ITOCHU Techno-Solutions Mexico Thailand JIP Techno Science Venezuela CREA-TEC Colombia Malaysia Cybernet Systems Singapore Brazil BoliviaMIDASoft USA / New York MIDAS IT China / Beijing MIDAS R&D Center India / Mumbai MIDAS IT Japan / Tokyo45 Broadway, Suite 1130 Rm.1307, 13th Floor, Fangyuan 56(Yi), 804 & 805, 8th Floor, Maithilis Signet, Akiba-mitakikan 8th fl., 4-5-5New York, NY 10006, USA Zhongguancun Nan da Jie Haidian Plot No. 39/4, Sector 30A Vashi, Sotokanda, Chiyoda-ku, Tokyo,+1 212 835 1666 / midasoft@midasuser.com District, Beijing, China Navi Mumbai – 400705 101-0021, Japan +86 010 51658210 / beijing@midasuser.com +91 22 6721 1001~3 / india@midasuser.com +81 3 5207 6388 / midas_japan@midasit.com
  4. 4. 01. Innovative user interface midas Civil Bridging Your Innovations to Realities "Stretch your imagination & extend your ideas without restrictions. midas Civil will help you achieve the goals." midas Civil - Framework Task Pane A new concept tool, which enables the user to freely set Full graphical representation Works Tree Main Menu Tabbed Toolbars Context Menu optimal menu systems of all shapes A new concept menu system comprising frequently used menus Display of line & plane type Procedural sequence defined by the user for maximum efficiency section shapes Auto-links to manuals, technical papers and tutorials Combined analysis results & design display Links to corresponding dialog boxes for ease of checking input data Hidden view processing of a user-specified section Walk Through Mode Model rendering provided in various view points Command Line Modeling function similar to AutoCAD commands Modeling by One Key commands Output Window Property Window Possible to change assigned properties of a selected entity / item Simultaneous display of various results in post-processing5 MIDAS Modeling, Integrated Design & Analysis Software
  5. 5. 01. Innovative user interface midas Civil Bridging Your Innovations to Realities "Stretch your imagination & extend your ideas without restrictions. midas Civil will help you achieve the goals." midas Civil - Graphic User Interface Visualization Designer A new concept graphical tool, which enables the user to freely combine and manipulate analytical model and results Graphical means to freely select, remove and add domain, plane, line & point information desired by the user Generation of a variety of model views by unit functionality (Contour, Iso Surface, Cutting, etc.) Analysis results creatively expressed in numerous ways using unit functionality Visualization support tool, which generates various scenes in a selected domain Simulation Wizard, which saves and regenerates the total process of graphics generation Mouse operation replacing the use of dialog boxes for frequently used modeling functions Horizontal Cutting Visualization Visualization Multi-selection of Cutting planes Clip Box + Contour + Contour Line Multi Clip + Cut Plane + Property Color Designer Designer Vertical Cutting Universal Widget Multi Cutting Plane View midas Civil Clip Box + Iso Surface Contour + Cut Plane + Glyph Graphic User InterfaceMIDAS 6Modeling, Integrated Design & Analysis Software
  6. 6. 02. Optimal solutions for bridges midas Civil Bridging Your Innovations to Realities "One Stop Solution for practicing bridge engineers with RC, steel & PSC design" Design process for bridge design Reinforced Concrete design (beam / column) Bridge analysis and design are carried out in an iterative process Analysis Design Optimal solution provided for analysis & design Iterative Process Modeling Analysis Design Steel Design RC Design PSC Design Stress calculations for Beam / column section check Flexural strength check user-defined sections Irregular column section design Shear strength check Combined stresses due to axial & Auto-recognition of braced Torsional strength check RC section check report RC section detail check report bending (all sections in database) conditions of columns Reinforcing steel calculation & Combined stresses due to bending tendon check & shear (all sections in database) Summary of construction stage results RC / Steel / PSC design per AASHTO LRFD Iterative analyses for calculating optimal sections & rebars Optimized Design One stop solution combining static & dynamic analyses carried out in a same file with member design7 MIDAS Modeling, Integrated Design & Analysis Software
  7. 7. 02. Optimal solutions for bridges midas Civil Bridging Your Innovations to Realities "One Stop Solution for practicing bridge engineers with RC, steel & PSC design" RC design (Irregular column section check) Steel Design (combined stress checks) Section types in database User-defined irregular column sections Section types in database User-defined irregular sections Section defined by coordinates Rebars defined by coordinates Tower Model of irregular section Column check (PM interaction plot) Graphical results of stress checks Various column sections provided (box, pipe, solid round, octagon, etc.) Stress checks for user-defined sections Column checking for user-defined sections Combined stress check for bending & shear (all sections in database) Auto-calculation of braced condition Combined stress check for axial & bending (all sections in database) Design check for maximum forces with corresponding force componentsMIDAS 8Modeling, Integrated Design & Analysis Software
  8. 8. 02. Optimal solutions for bridges midas Civil Bridging Your Innovations to Realities "One Stop Solution for practicing bridge engineers with RC, steel & PSC design" Optimal design reflecting change in boundaries for different loading & analysis conditions Application Example: Design of a subway structure Boundary Change Assignment to Load Cases/Analyses Static analysis Dynamic analysis A single analytical model Change in boundary conditions / section stiffness by loading conditions & analysis types Normal support condition Support condition for seismic analysis A single analytical model Application examples Frame bridge analysis for normal & seismic conditions Subway tube analysis for normal & seismic conditions Simultaneous static & seismic analyses of bridges with bearing isolators Analysis results for normal condition (moment) Seismic analysis results (moment) Separate analyses by analysis cases Analysis Separate analyses by load cases RC / Steel / PSC Design (AASHTO LRFD) Design Optimized Design Optimal member design (beam / column) RC section check results Application Example: a unified analysis for a subway structure A single analysis file, which handles different boundary conditions or section stiffness for different loading Change in boundary conditions by load cases and RC design feature used conditions or analysis types Simultaneous static & dynamic analyses for an FCM bridge with seismic bearing isolators Optimal member design using load combination results of a unified model Section design of bridge piers & towers9 MIDAS Modeling, Integrated Design & Analysis Software
  9. 9. 03. PSC bridge design midas Civil Bridging Your Innovations to Realities "Integrated solution for practical PSC bridge design (Longitudinal & transverse direction analyses and strength checks)" Procedure and main features for PSC bridge design Automatic generation of transverse analysis model Global Transverse Partial Global analysis Transverse Integrated solution End Strength check analysis along model modification RC design along the spans analysis for PSC bridge design the spans generation of model data of design Construction stage analysis reflecting change in elements, boundary conditions & loadings Creep & shrinkage calculation based on codes Time dependent steel relaxation (CEB-FIP, AASHTO, Magura & JTG 04) Irregular sections displayed to true shapes 3D/2D tendon placement assignment (lumped representative tendon analysis) Strength check to AASHTO LRFD Generation & analysis Defining positions for transverse analysis Transverse analysis model wizard of a transverse model Confinement effect of rebars considered for creep Auto-calculation of section properties considering effective width Easy generation of non-prismatic tapered sections over the entire or partial spans FCM Bridge Beam stress check for PSC bridges Automatic reaction summary at specific supports through staged launching in ILM bridges Compression-only element provided for modeling RC design for a selected member Excel format calculation report Input / Output tables temporary supports & precasting platform (future release) Completed state analysis reflecting effective width by construction stages Auto generation of transverse analysis models through global analysis models Special type of PSC bridge analysis (extradosed bridge) Transverse analysis model generation wizard & auto generation of loading and boundary conditions (transverse tendon assignment) Automatic generation of transverse analysis model Automatic placement of live load for transverse analysis RC design of irregularly shaped columns Extradosed Bridge Automatic positioning of loadings for plate analysis Section check using RC / PSC design functionMIDAS 10Modeling, Integrated Design & Analysis Software
  10. 10. 03. PSC bridge design midas Civil Bridging Your Innovations to Realities "Integrated solution for practical PSC bridge design (Longitudinal & transverse direction analyses and strength checks)" Modeling features suited for practical design (1) Modeling features suited for practical design (2) Auto generation of non-prismatic Automatic calculation Display and design of irregular sections tapered sections of effective width Auto generation of tapered Irregular section defined by user using SPC sections based on bridge Automatic calculation of effective width Schedule-based input of rebars for PSC bridges spans PSC wizard reflecting design practice Lumped representative tendon analysis 3D tendon profile placement 2D placement of tendons using the representative tendon function Tendon profile input and real-time display Convenient auto generation of tapered sections (change in thicknesses of top/bottom flanges and web Modeling PSC bridges of irregular sections using Section Property Calculator separately considered) PSC bridge wizards (FCM, ILM, MSS & FSM): user-defined tendons & sections possible Construction stage analysis and completed state analysis reflecting auto calculated effective width Exact 3D tendon and simplified 2D tendon placements11 MIDAS Modeling, Integrated Design & Analysis Software
  11. 11. 03. PSC bridge design midas Civil Bridging Your Innovations to Realities "Integrated solution for practical PSC bridge design (Longitudinal & transverse direction analyses and strength checks)" Automatic strength check Various analysis results for practical design Design parameters for strength check Tension losses in tendons Tendon loss graph PSC bridge-specific stress diagrams Maximum normal stress distribution for a PSC bridge Bending strength check Analysis results table Analysis results graph Principal stress distribution for a PSC bridge PSC bridge-specific stress output AASHTO LRFD specifications Separate immediate and time-dependent tension losses by tendons (graphs & tables) Bending strength, shear strength & torsional strength checks Generation of tendon weights and coordinates (calculation of tendon quantity) Transverse rebars check and resistance & factored moment diagrams Normal / principal / shear / inclined stresses using PSC Stress Diagram command Stress check for completed state by construction stages Generation of erection cambers Generation of member forces & stresses by construction stages and maximum & minimum stresses summary Summary of reactions at specific supports in ILM bridges Excel format calculation report (future release)MIDAS 12Modeling, Integrated Design & Analysis Software
  12. 12. 03. PSC bridge design midas Civil Bridging Your Innovations to Realities "Integrated solution for practical PSC bridge design (Longitudinal & transverse direction analyses and strength checks)" Special type of PSC bridges (1) Special type of PSC bridges (2) Construction stage analysis of an extradosed bridge (FCM) Construction stage analysis of an extradosed bridge (FSM) 1 2 Analysis results of a completed state model Construction Stage Analysis Control dialog box Construction stage analysis - tower erection Construction stage analysis - staged construction 1 of girders 3 4 Construction stage analysis - FSM 2 Construction stage analysis - cable erection 3 Construction stage analysis - cable erection Completed state model Construction stage analysis - removal of shoring Compression-only element provided to reflect the effects of temporary bents Construction stage analysis reflecting time-dependent material properties and pre-tensioning forces Calculation of section properties of an irregular section using AutoCAD and SPC External type pretension loads provided for inducting cable tensioning forces Calculation of normal / principal / inclined stresses using the Beam Stress (PSC) command13 MIDAS Modeling, Integrated Design & Analysis Software
  13. 13. 04. Cable bridge analysis midas Civil Bridging Your Innovations to Realities "Optimal solution for cable bridge analysis (completed state & construction stage analyses with advanced analysis functions)" Optimal solution for cable bridge analysis Initial equilibrium state analysis for cable stayed bridges Generation of optimal cable pretension forces Cable Stayed Bridge satisfying design constraints Initial equilibrium state analysis 1 1 Cable nonlinearity considered (equivalent truss, 1 Optimum solutions produced by an optimization theory based nonlinear truss & catenary cable elements) on object functions Calculation of initial pretensions for cable stayed 2 Solutions obtained by simultaneous equations if the numbers bridges & initial shape analysis for suspension bridges 2 2 of constraints and unknowns are equal Construction stage analysis reflecting Optimum stressing strategy geometric nonlinearity 3 Finite displacement method (P-delta analysis by cons- truction stages and for completed state) 1 Auto generation of construction stage pretensions Large displacement method (independent models for back- using the tensions in the completed state ward analysis & forward construction stage) (linear & nonlinear) 2 Behaviors of key segments in real construction reflected Completed state analysis & tower Ideal dead load force diagram assumed 3 Large displacement analysis reflecting creep & shrinkage / girder design Linearized finite displacement method & linear elastic method Linear buckling analysis / moving load analysis / inelastic dynamic analysis Steel column design of irregular sections 4 5 Initial equilibrium state analysis results satisfying constraints 4 Backward construction stage analysis using internal member 6 forces (reflecting large displacement) 5 Auto calculation of tensions in main cables and coordinates for self-anchored and earth-anchored suspension bridges Optimal initial pretensions generated to satisfy desired girder, tower & cable force and displacement Detail output for suspension cables (unstressed lengths, sag, constraints etc.) & detail shape analysis 6 Steel column design of irregular sectionsMIDAS 14Modeling, Integrated Design & Analysis Software
  14. 14. 04. Cable bridge analysis midas Civil Bridging Your Innovations to Realities "Optimal solution for cable bridge analysis (completed state & construction stage analyses with advanced analysis functions)" Construction stage analysis for cable stayed bridges Construction stage analysis for cable stayed bridges 01 - Forward stage analysis using the pretensions in the completed state 02 - Forward stage analysis based on application of constraints STEP 01. Calculation of pretensions using Procedure for a construction stage analysis Unknown Load Factor Construction Stage 1 Unit pretension loads applied Iteration Unknown Load Factor Assignment of constraints & calculation of unknown load factors for each stage (good convergence) 2 Optimal tensions in cables found satisfying constraints STEP 02. Forward stage analysis for a cable stayed bridge using the pretensions Construction Stage of the completed state and Lack of fit force Re-analysis of construction stage 3 reflecting influence factors 1 2 Check Analysis of results for each construction stage Construction stage analysis results - initial erection Construction stage analysis results - cantilevers erected 1 Set up constraints and unknowns 2 Load Factors found 3 4 End 3 Iteration control Construction stage analysis results - closure of side spans Construction stage analysis results - immediately before center span closure 5 Construction stage analysis results Analysis results of the completed state Construction stage analysis results - final stage Completed state analysis results - Moment Auto calculation of erection pretensions by entering only the pretensions of the completed state & adding Lack of fit force without having to perform backward analysis Calculation of cable pretensions by construction stages satisfying the constraints for the completed state Applicable for both large displacement and small displacement analyses Auto-iterative function provided to reflect creep & shrinkage Initial equilibrium state analysis reflecting the behaviors of the closure of key segments during erection Superb convergence for calculating unknown load factors using simultaneous equations & object functions Auto calculation of construction stage pretensions accounting for creep & shrinkage15 MIDAS Modeling, Integrated Design & Analysis Software
  15. 15. 04. Cable bridge analysis midas Civil Bridging Your Innovations to Realities "Optimal solution for cable bridge analysis (completed state & construction stage analyses with advanced analysis functions)" Initial shape analysis for suspension bridges Construction stage analysis of earth anchored suspension bridges Procedure for accurate analysis method Structure (elements, nodes, materials, loads & boundary conditions) Cable (unstressed lengths & iteration convergence conditions) Geometric nonlinear analysis Accurate analysis of initial Structural stiffness, loads & internal forces shape performed to satisfy un-equilibrated forces calculated the coordinates of towers and sags A self-anchored suspension Accurate analysis method using Suspension Bridge Nodal displacements & member Initial tension forces in cables of a suspension bridge bridge model using Suspension forces calculated Bridge Wizard Analysis Control Backward construction stage analysis - large displacement analysis Control for convergence 1 2 (rate of change in displacements) Updated nodal coordinates revised Revised nodes & member forces Removal of superimposed dead load Removal of main span girders unstressed lengths recalculated Equilibrium forces calculated for each member (internal member forces) 3 4 Nodal coordinates updated Unstressed lengths of cables determined Equilibrium member forces determined for each member Removal of side span girders Removal of side span girders completed Initial shape model of a suspension bridge 5 6 Conventional earth anchored suspension bridges - initial shape analysis performed in Wizard through simple method / accurate analysis Initial shape analysis function for special suspension bridges with hangers located on different planes (accurate analysis) Removal of main span girders Removal of hangers & setback calculation Shape analysis function reflecting initial member forces of self anchored suspension bridgesMIDAS 16Modeling, Integrated Design & Analysis Software
  16. 16. 04. Cable bridge analysis midas Civil Bridging Your Innovations to Realities "Optimal solution for cable bridge analysis (completed state & construction stage analyses with advanced analysis functions)" Construction stage analysis of self anchored suspension bridges Cable Bridge Analysis Options 1 3 Initial shape analysis Initial tension forces of a self anchored suspension bridge 2 Backward construction stage analysis - large displacement analysis 1 Final Stage 2 Stage 05 3 Stage 04 4 Stage 03 1 Large displacement analysis by construction stages Independent Stage: backward analysis (independent model) Include Equilibrium Element Nodal Force: backward analysis reflecting internal forces (independent model) Accumulative Stage: Accumulative model for forward analysis P-delta analysis by construction stages Include P-delta Effect Only (2nd release in 2006) 5 Stage 02 6 Erection bents, main cables & girders installed 2 Reflection of tangential girder erection Initial Tangent Displacement for Erected Structure (fabrication camber calculated) Auto calculation of cable tensions by construction stages Lack of fit force control: construction stages using tensions in the completed state automatically produced Accurate analysis with initial member forces to reflect the behavior of a self anchored suspension bridge subjected to axial forces in girders Typical construction methods applicable for self anchored suspension bridges such as hanger insertion and 3 Cable-Pretension Force Control Jack-down construction methods Initial Force: Initial tensions inducted into as internal forces (inducted loads internal cable forces) External Force: Initial tensions inducted into as external forces (inducted loads = internal cable forces)17 MIDAS Modeling, Integrated Design & Analysis Software
  17. 17. 05. Nonlinear analysis midas Bridging Your Innovations to Realities Civil "Seismic & earthquake resistant system and seismic performance evaluation for bridges using high-end nonlinear analysis" Nonlinear analysis process in midas Civil Various dynamic analysis functions Nonlinear seismic analysis and performance evaluation for bridges Nonlinear material properties & plastic hinge properties of members Approximate dimensions / section profile Analysis model data (hysteresis models, yield strengths, PM interaction & / material properties post yielding behavior properties) Finite elements (beam, column, plate & solid) Structural model of a bridge Inelastic spring properties (stiffness, effective damping ratios & hysteresis properties) 3 Definition of input loads Static loads & inelastic response spectrum 1 (damping & ductility ratio) Acceleration time histories & artificial seismic waves) 2 Basic seismic design Nonlinear static analysis Boundary nonlinear Inelastic time history (pushover analysis) analysis analysis 1 Multi-spectrum input Load control Direct integration Definition of a number of response spectrum load cases using different Seismic control Seismic isolation design spectrums Viscoelastic LRB Spectrum values corresponding to modal damping ratios Displacement control Hysteretic FPS Inelastic element Performance 2 Response spectrums & interpolation considering modal damping ratios Effective stiffness Damping Beam-Column Modal damping ratio applied using correctional equation if a single spectrum Inelastic response spectrum /effective damping device Time Step hysteretic properties selected Lumped Hinge Type Seismic performance Interpolation of spectrum load data used if a number of spectrums specified evaluation Effective Damping Seismic isolation Distributed Hinge Yype Ductility Spring, Truss 3 Consistent mass consideration Capacity spectrum method Nonlinear modal analysis Both lumped mass & consistent mass available Displacement coefficient method Newmark - - Linear acceleration method Mass specified at the neutral axis of a member regardless of Mass Offset or Displacement based design method Section Offset Runge-Kutta method - Average acceleration method Response evaluation Response evaluation Response evaluation Staged reactions, member Eigenvalues (natural frequencies) Displacement, velocity & acceleration time history forces, stresses, displacements, Seismic isolator & damper hysteresis loops, Inelastic hinge distribution plastic hinge distribution Displacement, velocity & acceleration time history Member curvature & rotational ductility & system displacement ductility In addition to lumped mass, Mass Offset & Consistent Mass also considered A number of response spectrum loads defined using different design spectrums Accurate behavior analysis using nonlinear seismic response of a bridge Various methods for applying damping for time history analysis (Direct Modal, Mass & Stiffness Proportional, Strain Energy Proportional, Element Mass & Stiffness Proportional) Seismic performance Seismic resistance Accurate seismic evaluation & isolation system evaluation safety evaluationMIDAS 18Modeling, Integrated Design & Analysis Software
  18. 18. 05. Nonlinear analysis midas Civil Bridging Your Innovations to Realities "Seismic & earthquake resistant system and seismic performance evaluation for bridges using high-end nonlinear analysis" Boundary nonlinear analysis Analysis capabilities for dampers & base isolators Viscoelastic Damper Lead Rubber Bearing Isolator Lead Rubber Bearing Friction Pendulum System Hysteretic System Hysteretic System Friction Pendulum System Isolator Viscoelastic Damper Runge-Kutta method analysis condition Structural analysis function including nonlinear link elements (General Link) Structural analysis using spring elements having nonlinear properties (Inelastic Hinge Property) Dampers, base isolators & inelastic elements simultaneously considered in nonlinear time history analysis (nonlinear direct integration method) Various dampers & base isolators (Gap, Hook, Viscoelastic Damper, Hysteretic System, Lead Rubber Bearing Isolator & Friction Pendulum System Isolator) Good convergence by Runge-Kutta method (Step Sub-Division Control & Adaptive Stepsize Control) Static loads converted into the form of dynamic loads (Time Varying Static Loads)19 MIDAS Modeling, Integrated Design & Analysis Software
  19. 19. 05. Nonlinear analysis midas Civil Bridging Your Innovations to Realities "Seismic & earthquake resistant system and seismic performance evaluation for bridges using high-end nonlinear analysis" Nonlinear time history analysis Numerous inelastic hysteresis models 4 Hinge type models Inelastic hysteresis models in midas Civil Lumped type hinge Spring type hinge Uni-axial hinge model Multi-axial hinge model Distributed type hinge Truss type hinge 19 Models provided including bi-linear, tri-linear, Translational hardening type model Clough, slip models, etc / fiber model Takeda Tri-linear Clough Deg. Tri-linear Auto generation of plastic Evaluation of ductility hinge properties demand for members Various nonlinear hysteresis models Input for nonlinear Origin-Oriented Peak-Oriented Slip Ramberg Osgood analysis conditions Accurate analysis by simultaneously considering nonlinear & time dependent properties of members to evaluate seismic safety Nonlinear time history analysis function, which uses linear static & construction stage analysis results as initial section forces (initial section forces reflected in hysteresis) Good convergence achieved through applying stable direct integration method & numerical iterative method Over 50 built-in earthquake acceleration records in DB & import of artificial seismic waves Generation of tables & graphics for versatile nonlinear analysis results (hinge distribution, max. & min. displacement / velocity / acceleration, time history graphs, simulations Versatile nonlinear analysis results (hinge distribution, max. & min. displacement / velocity / acceleration, & production of various events) time history graphs & simulations)MIDAS 20Modeling, Integrated Design & Analysis Software
  20. 20. 05. Nonlinear analysis midas Civil Bridging Your Innovations to Realities "Seismic & earthquake resistant system and seismic performance evaluation for bridges using high-end nonlinear analysis" Nonlinear time history analysis Dynamic nonlinear analysis reflecting axial force - moment interaction Auto setting of yield surface & auto calculation of yield properties Translational hardening type model (translation of yield surface) Translation of 1st yield surface after 1st yielding Translation of 1st yield surface at unloading RC Type Steel Type Translation of 2nd yield surface after Translation of 2nd yield surface after 2nd yielding on the +ve side 2nd yielding on the -ve side Nonlinear dynamic analysis considering axial force - moment interaction Variable axial force considered (PMM): translational hardening type model by plasticity theories Fixed axial force considered (PM) Initial axial forces considered (P-M) Variable axial forces considered (P-M-M)21 MIDAS Modeling, Integrated Design & Analysis Software
  21. 21. 05. Nonlinear analysis midas Civil Bridging Your Innovations to Realities "Seismic & earthquake resistant system and seismic performance evaluation for bridges using high-end nonlinear analysis" Nonlinear dynamic analysis using fiber models Versatile & convenient definition of fiber section & division A bridge model using fiber elements Stress-strain relationships for concrete & steel RC Section PSC Section Moment-curvature relationship of a fiber element Versatile & convenient Concrete Filled Section Hollow Steel Section section damage assessment Limitation of nonlinear hinge models eliminated, which are based on experience such as pushover analysis, seismic analysis, etc. Change in axial forces accurately reflected through fiber models in structures whose axial forces change significantly Efficient fiber division function for various sections such as rectangular, circular & PSC sections Accurate representations of confinement effects of tie reinforcing steel, crushing, cracking, etc. in concrete members under nonlinear analysis Simple representation of reinforcing steel using the Import function Accurate representations of tensile yielding, compressive yielding, buckling, fracture, etc. in steel members under nonlinear analysis Analytical models for optimal retrofit reinforcement to existing structures such as plate reinforcementMIDAS 22Modeling, Integrated Design & Analysis Software
  22. 22. 05. Nonlinear analysis midas Civil Bridging Your Innovations to Realities "Seismic & earthquake resistant system and seismic performance evaluation for bridges using high-end nonlinear analysis" Nonlinear static analysis Nonlinear shell element 1 −s 1 2 sin f 6c cos f F= I1 + J 2 - 3 Von Mises F = 3J2 - Y F = t - (c + s n tan f ) 3 ( 3 - sin f ) 3 ( 3 - sin f ) Hydrostatic Axis Tresca F=( 1 - 3) Y 2 −s 3 3 1 2 −s 2 Von Mises - Tresca Mohr-Coulomb Drucker-Prager Material nonlinear properties Cantilever beam with Pinched cylinder Hemispherical shell with a hole channel section Load-Deflection curve Yield states along thickness Nonlinear analysis control Results of a cyclic loading test High end analysis functions to represent nonlinear behaviors of structures after elastic limits Good convergence for nonlinear analysis using shell elements, which reflect large displacements & large rotations Various hardening models, which define the behaviors from the elastic limits to maximum stress points (Isotropic hardening, Kinematic hardening & Mixed hardening) Representation of material nonlinearity of degenerated shell elements by integrating stresses in the thickness direction using a layered approach Various failure models frequently encountered in civil engineering practice (Tresca, Von Mises, Mohr-Coulomb & Drucker-Prager) Plastic zone display function, which shows the status of yielding of shell elements in the thickness direction to obtain detail information on material nonlinearity Cyclic Load function using the loading sequence function to represent the nonlinear behaviors of structures subjected to cyclic loads Material & geometric nonlinear analysis functions to carried out detail analyses of steel structures consisted of steel box, steel plate & I-beam sections23 MIDAS Modeling, Integrated Design & Analysis Software

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