1SesamTM40 years of successMigrating models from other systems to SesamPål Dahlberg, Sesam Principal Sales Executive17 Apr...
Why Sesam             One common tool for all design             stages from construction through             installation...
Benefits from using Sesam for jacketsNew builds covering Manage existing                                              Coll...
Imported models open a door of             Sesam opportunities             - New build design             - Re-analysis sy...
Our tools – your solutions – your decisions  Transportation, launching                                                    ...
Import of jackets, jack-ups &             topsides             -              Beams and plates             -              ...
Our tools – your solutions – your decisions                                                                   xml         ...
Import from Sacs, StruCad3D and StaadPro  Sacs and StruCad3D                                                        Sacs ...
Easy to verify and appreciate the model in GeniE  Graphical visualisation and easy to query object   properties   - Struc...
How to import a model from Sacs  The procedure today      -   Import structure (automatic)      -   Import wave load data...
Demo – Import and verification  Import the structure, the wave loads and   load combinations      - Tools  Structure ver...
Linear static analysis of reference             model             - Deflection and stress check             - Code checkin...
Our tools – your solutions – your decisions                                                                   xml         ...
Linear static analysis – main purpose  Deflection checking  Code checking member, tubular joints and plates  FatigueSes...
Linear static analysis – deflections, stresses, forces  Deflection check according to AISC (or your own criteria)  Stres...
Linear static analysis – plate stresses  VonMises plate stresses in wave load case (4,1)      - Direction 135 degrees, wa...
Automatic definition of default buckling lengths  Global settings apply to all members                          The leg b...
Linear static analysis – member code checking  Code checking of members, e.g. tower and flare-boomSesamTM13 December 2011...
Linear static analysis – member code checking  Code checking of members, e.g. helideckSesamTM13 December 2011© Det Norske...
Linear static analysis – member code checking  Code checking of members, e.g. jacket      - Buckling lengths not adjusted...
Linear static analysis – fatigue  Sesam supports 3 options      - Deterministic fatigue (regular waves, time domain wave ...
Linear static analysis – fatigue  Include a refined shell model (finite element model) in the global model for the   purp...
To summarize:SesamTM13 December 2011© Det Norske Veritas AS. All rights reserved.   38
Our value proposition and uniqueness  Closing the design loop by modern concept modelling and work process tools      -  ...
Our value proposition  Usability      -   A modern design oriented tool that is easy to use and that is appealing to all ...
Sesam gives you                                Improved        • Interactive graphics – easy to understand                ...
Safeguarding life, property       and the environment       www.dnv.comSesamTM13 December 2011© Det Norske Veritas AS. All...
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Migrating from Other CAE Systems to Sesam

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Presentation by Pal Dahlberg on Seminar Design of Fixed Structures with DNV Software (April 2012)

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Migrating from Other CAE Systems to Sesam

  1. 1. 1SesamTM40 years of successMigrating models from other systems to SesamPål Dahlberg, Sesam Principal Sales Executive17 April, 2012
  2. 2. Why Sesam One common tool for all design stages from construction through installation, in-place (including re-analysis), re-qualification to removalSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 2
  3. 3. Benefits from using Sesam for jacketsNew builds covering Manage existing Collapse analysis Modification work entire life cycle re-analysis models Requalification - all phasesMTO, deflection check, Understand models over time, Extreme conditions, Design of new parts code check, fatigue produce and view results accidents, fire, explosion Re-design of existing Same model for all stages – can be shared with other units like the floating departmentSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 4
  4. 4. Imported models open a door of Sesam opportunities - New build design - Re-analysis systems - Re-qualification - ModificationsSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 5
  5. 5. Our tools – your solutions – your decisions Transportation, launching Transportation, lifting Deflections, Stresses, Deflections, Stresses, Code-check, Fatigue Code-check, Fatigue Non-linear analysis, Linear analysis (wave, pile/soil) collapse, accidents, Deflections, Stresses, re-qualifications Code-check, Fatigue, EarthquakeSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 6
  6. 6. Import of jackets, jack-ups & topsides - Beams and plates - Loads and load combinations - Wave load data - Soil dataSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 7
  7. 7. Our tools – your solutions – your decisions xml xml Transportation, launching Transportation, lifting Deflections, Stresses, Deflections, Stresses, Code-check, Fatigue Code-check, Fatigue fem Non-linear analysis, Linear analysis (wave, pile/soil) collapse, accidents, Deflections, Stresses, re-qualifications Code-check, Fatigue, EarthquakeSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 8
  8. 8. Import from Sacs, StruCad3D and StaadPro  Sacs and StruCad3D Sacs example - Structure, manually defined loads & load combinations - Completed - On-going tasks - Tension/compression (Q2/2012) - Surface loads and temperature loads (Q4/2012) - Import of pile/soil data (Q4/2012)  StaadPro - Structure and manually defined loads - On-going (Q2/2012) StruCad3D exampleSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 9
  9. 9. Easy to verify and appreciate the model in GeniE  Graphical visualisation and easy to query object properties - Structure – model, point masse and sets - Total mass and centre of gravity - Properties – sections, materials & hydro- coefficients - Local co-ordinate systems – beams and plates - Loads – both manually applied and waves - Load combinations – loads and scaling factors - Soil layers - Displacements, stresses, forces, deflections for single load-case(s) or envelope  From reports - All above - Maximum wave shear and overturning moment - Load sums and reaction forces  List of data that are not converted - Easy to find out what needs to be dealt with in a manual manner  Tools  Verify structureSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 10
  10. 10. How to import a model from Sacs  The procedure today - Import structure (automatic) - Import wave load data (automatic) - Import load combinations (automatic) - Add soil data - Verify model with previous reports or model data - Run a linear static analysis and verify selected key results (displacements, forces and stresses)  You can do it - Without training or assistance - By reading our tutorial - Learning from a course where the goal is to import 3 structures - We can do it as a consulting service to you  Once the model is verified it can be used for all purposes in SesamSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 11
  11. 11. Demo – Import and verification  Import the structure, the wave loads and load combinations - Tools  Structure verify  Understand the structure - Various check points like e.g. mass, centre of gravity, boundary conditions, colour coding, hydrodynamic properties  Verify the loads - Basic load cases - Load combinations - Wave loads  Make reports  Make picturesSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 25
  12. 12. Linear static analysis of reference model - Deflection and stress check - Code checking - Fatigue analysisSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 26
  13. 13. Our tools – your solutions – your decisions xml xml Transportation, launching Transportation, lifting Deflections, Stresses, Deflections, Stresses, Code-check, Fatigue Code-check, Fatigue fem Non-linear analysis, Linear analysis (wave, pile/soil) collapse, accidents, Deflections, Stresses, re-qualifications Code-check, Fatigue, EarthquakeSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 27
  14. 14. Linear static analysis – main purpose  Deflection checking  Code checking member, tubular joints and plates  FatigueSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 28
  15. 15. Linear static analysis – deflections, stresses, forces  Deflection check according to AISC (or your own criteria)  Stresses/Forces (vonMises, SIGxx, SIGyy, TAUxy, Nxx, Mxy…….)SesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 29
  16. 16. Linear static analysis – plate stresses  VonMises plate stresses in wave load case (4,1) - Direction 135 degrees, wave height 11.7m, wave period 10.6 secSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 30
  17. 17. Automatic definition of default buckling lengths  Global settings apply to all members The leg between two - Can be imported via scripting from Sacs joints has three Bm6224 members. It will be necessary to define  Local settings to individual members buckling lengths for - Can be imported via scripting from Sacs each of these Bm6223 Bm1344 The leg between two joints has one member. The buckling length is the length between the joints – often necessary to modify. The member has all the knowledge about the underlying FE modelSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 32
  18. 18. Linear static analysis – member code checking  Code checking of members, e.g. tower and flare-boomSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 33
  19. 19. Linear static analysis – member code checking  Code checking of members, e.g. helideckSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 34
  20. 20. Linear static analysis – member code checking  Code checking of members, e.g. jacket - Buckling lengths not adjusted – hence results may not be realSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 35
  21. 21. Linear static analysis – fatigue  Sesam supports 3 options - Deterministic fatigue (regular waves, time domain wave load analysis) - More accurate wave loads (any theory and proper drag) - Simple and straight forward - Stochastic fatigue (spectral wave load analysis) - Structural dynamics and better coverage of environmental conditions - Prior to fatigue analysis partial damage may be set - Time domain fatigue (irregular waves, time domain wave load analysis) – also known as Rainflow Counting Fatigue (RFC) - Wave loads to instantaneous free surface (also for irregular sea states) - Non-linear pile soil effectsSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 36
  22. 22. Linear static analysis – fatigue  Include a refined shell model (finite element model) in the global model for the purpose of computing stresses, SCF’s for beam fatigue or direct shell fatigue Load combination ST01 Use the GeniE SnackPack to auto convert from beam to shellSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 37
  23. 23. To summarize:SesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 38
  24. 24. Our value proposition and uniqueness  Closing the design loop by modern concept modelling and work process tools - Quick modelling - Local model in global model - Scripting/parametric models - Changes during design - One model – many analyses - Interaction with hydro - Advanced hydrodynamics - Beam/plate code checking - Beam/plate fatigue - Non-linear pushover - ReportingSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 39
  25. 25. Our value proposition  Usability - A modern design oriented tool that is easy to use and that is appealing to all engineers - Short way from modelling to results - Easy to do re-design - Easy to understand and master own and imported models  Completeness and sustainability - One common tool for all design analysis tasks covering all conditions from construction through installation, in-place (including re-analysis), re-qualification to removal - Life time approach to data compatibility - A high degree of new developments and maintenance – our income is re-invested in Sesam  Flexible licensing model - Our customers decide how many concurrent users and how much functionality - Perpetual usage or lease options  Services - Experienced support staff, 24/5 year around, support locally talking your language - Training at your place or our placeSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 40
  26. 26. Sesam gives you Improved • Interactive graphics – easy to understand • Consistent model through all analysis quality • Reports Higher • One system to learn • One model for all efficiency • Control and share data model with others More • Covering all life cycle conditions • Share resources – concurrent engineering flexibility • Design iterations – change capacitySesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 41
  27. 27. Safeguarding life, property and the environment www.dnv.comSesamTM13 December 2011© Det Norske Veritas AS. All rights reserved. 42

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