So far, all of the exercises presented in this module have been statically determinate, i.e. there have been enough equations of equilibrium available to solve for the unknowns. This final section will be concerned with statically indeterminate structures, and two methods used to solve these problems will be presented.
Structural engineering i- Dr. Iftekhar Anam
Structural Stability and Determinacy,Axial Force, Shear Force and Bending Moment Diagram of Frames,Axial Force, Shear Force and Bending Moment Diagram of Multi-Storied Frames,Influence Lines of Beams using Müller-Breslau’s Principle,Influence Lines of Plate Girders and Trusses,Maximum ‘Support Reaction’ due to Wheel Loads,Maximum ‘Shear Force’ due to Wheel Loads,Calculation of Wind Load,Seismic Vibration and Structural Response
http://www.uap-bd.edu/ce/anam/
Structural engineering i- Dr. Iftekhar Anam
Structural Stability and Determinacy,Axial Force, Shear Force and Bending Moment Diagram of Frames,Axial Force, Shear Force and Bending Moment Diagram of Multi-Storied Frames,Influence Lines of Beams using Müller-Breslau’s Principle,Influence Lines of Plate Girders and Trusses,Maximum ‘Support Reaction’ due to Wheel Loads,Maximum ‘Shear Force’ due to Wheel Loads,Calculation of Wind Load,Seismic Vibration and Structural Response
http://www.uap-bd.edu/ce/anam/
Civil Engineering is the Branch of Engineering.The Civil engineering field requires an understanding of core areas including Mechanics of Solids, Structural Mechanics - I, Building Construction Materials, Surveying - I, Geology and Geotechnical Engineering, Structural Mechanics, Building Construction, Water Resources and Irrigation, Environmental Engineering, Transportation Engineering, Construction and Project Management. Ekeeda offers Online Mechanical Engineering Courses for all the Subjects as per the Syllabus Visit us: https://ekeeda.com/streamdetails/stream/civil-engineering
Lecture slides on the calculation of the bending stress in case of unsymmetrical bending. The Mohr's circle is used to determine the principal second moments of area.
Civil Engineering is the Branch of Engineering.The Civil engineering field requires an understanding of core areas including Mechanics of Solids, Structural Mechanics - I, Building Construction Materials, Surveying - I, Geology and Geotechnical Engineering, Structural Mechanics, Building Construction, Water Resources and Irrigation, Environmental Engineering, Transportation Engineering, Construction and Project Management. Ekeeda offers Online Mechanical Engineering Courses for all the Subjects as per the Syllabus Visit us: https://ekeeda.com/streamdetails/stream/civil-engineering
Lecture slides on the calculation of the bending stress in case of unsymmetrical bending. The Mohr's circle is used to determine the principal second moments of area.
Math cad vm-001 stress-strain transformationsJulio Banks
This report is intended to clarify that stress P and Q are actually principal stress 1 and 2 but not physical locations
P and Q. Additionally, the strains calculated in Method II
are solved directly with a matrix inversion and not iteratively
as provided in the reference paper. Nonetheless, this is
an excellent VM (Validation Model) recommended for
FEA (Finite Element Analysis) substantiation.
The module aims and objectives will be covered, together with the module outline and the methods of teaching and assessment. The module will then be introduced, and the important physical assumptions that will be applied throughout this module will be highlighted.
Stress concentrations produced by discontinuities in structures such as holes, notches, and fillets will be introduced in this section. The stress concentration factor will be defined. The concept of fracture toughness will also be introduced.
This section will introduce how to solve problems of axially loaded members such as stepped and tapered rods loaded in tension. The concept of strain energy will also be introduced.
An overview of the major materials used in aeronautical and automotive structures will be given in this section. The mechanical and physical properties of the materials will be highlighted, with an emphasis placed on the stiffness versus density and strength versus density of various materials.
The section will cover the behaviour of materials by introducing the stress-strain curve. The concepts of elastic and plastic deformation will be covered. This will then lead to a discussion of the micro-structure of materials and a physical explanation of what is happening to a polycrystalline material as it is loaded to failure.
The relationship between stress and deformation will be covered in this section, and some of the important elastic material properties such as Young’s modulus and the modulus of rigidity will be defined.
In this section the concept of stress will be introduced, and this will be applied to components that are in a state of tension, compression, and shear. Strain measurement methods will also be briefly discussed.
An introduction to the module is given, including forces, moments, and the important concepts of free-body diagrams and static equilibrium. These concepts will then be used to solve static framework (truss) problems using two methods: the method of joints and the method of sections.
The eighth lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics. Two phase flow, rheology and Powders covers flow of dispersions of powders in liquids and gases, as well as the storage of powders and why they sometimes do not flow. Equations to predict the pressure drop in pumped systems are provided, for both streamline and turbulent flows.
The ninth lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics. The different mechanisms for the removal of dust from gases are covered and the design equations used for control, modelling and understanding of the equipment are presented and derived. Examples of industrial equipment for gas cleaning are included.
The intention of this resource is to provide you with enough information to produce a high quality reports and literature reviews.
You may need to produce several small reports during the course of your undergraduate study as part of group coursework assignments. This guide along with other provide support.
The intention of this resource is to provide you with enough information to produce a high quality reports and literature reviews.
You may need to produce several small reports during the course of your undergraduate study as part of group coursework assignments. This guide along with other provide support.
The intention of this resource is to provide you with enough information to produce a high quality reports and literature reviews.
You may need to produce several small reports during the course of your undergraduate study as part of group coursework assignments. This guide along with other provide support.
The intention of this resource is to provide you with enough information to produce a high quality reports and literature reviews.
You may need to produce several small reports during the course of your undergraduate study as part of group coursework assignments. This guide along with other provide support.
When you enter the world of work, it will be necessary for you to communicate with colleagues, and others, in a clear, concise, and professional manner. This is an important skill regardless of the means of communication. For example, in addition to the inevitable report writing that will be required, it will also be expected that you are professional in your telephone conversations and face-to-face meetings with others, able to work as part of a team, make decisions and cope with tight deadlines.
As undergraduate engineers, many of you will be undertaking a work placement as part of your course requirements. The intention of this handout is to provide you with a global picture of the placement process with more detailed information on certain areas such as interviews and Curriculum Vitae (CV).
When you enter the world of work, it will be necessary for you to communicate with colleagues, and others, in a clear, concise, and professional manner. This is an important skill regardless of the means of communication. For example, in addition to the inevitable report writing that will be required, it will also be expected that you are professional in your telephone conversations and face-to-face meetings with others, able to work as part of a team, make decisions and cope with tight deadlines.
As undergraduate engineers, many of you will be undertaking a work placement as part of your course requirements. The intention of this handout is to provide you with a global picture of the placement process with more detailed information on certain areas such as interviews and Curriculum Vitae (CV).
As undergraduate engineers it is inevitable that you will, during your undergraduate course, be required to deliver a presentation as part of an assessed module, for example, a group coursework assignment or final year project. You may be required to deliver a presentation as part of a recruitment exercise and it is likely that this skill will be required by future employers.
This comprehensive handout provides information starting with the initial preparation that is required through to the day of your presentation. A checklist of important points is also included.
As undergraduate engineers it is inevitable that you will, during your undergraduate course, be required to deliver a presentation as part of an assessed module, for example, a group coursework assignment or final year project. You may be required to deliver a presentation as part of a recruitment exercise and it is likely that this skill will be required by future employers.
This comprehensive handout provides information starting with the initial preparation that is required through to the day of your presentation. A checklist of important points is also included.
The seventh lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics.
Centrifugal Separation covers both sedimenting and filtering centrifuges as well as hydrocyclones. Adaptation of the gravity settling and conventional filtration models, to account for the conceptual centrifugal acceleration, is included. Examples of industrial equipment for centrifugal separation are included.
The sixth lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics.
Membranes and Colloids covers the different types of particle related pressure driven membrane separations and models of flux decay and fouling. Colloidal behaviour using the DLVO theory is also covered, including colloid stability.
More from The Engineering Centre for Excellence in Teaching and Learning (20)
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
4. Statically Indeterminate Structures 1. Stiffness Method This 2D structure has: j=4, m=3 and r=6 (Each joint B, C and D has two reactions) 2j < m+r 8 < 9 Structure is statically indeterminate (Each bar has area A, Young's modulus E Length L AC = L) Free body diagram of joint A: 2P AB cos +P AC =P (Eqn 1) P AB sin = P AD sin (Eqn 2) We need more information to solve problem
5. Statically Indeterminate Structures Stiffness Method Under load P the truss has deformed. Member AB has extension 1 Member AC has extension 2 Assuming deformation is small ( ≈ ’) AB cos = AC A’B cos = A’C Hence we can write 1 = 2 cos (Eqn 3) We can obtain further information using A’ ’
9. Stiffness Method - Example Equilibrium of Bar C: Forces P A P B and P Bar A elongated by P A by amount A Bar B elongated by P B by amount B Bar C is remains horizontal hence A = B
11. Statically Indeterminate Structures 2. Compliance Method This 2D structure has: j=4, m=3 and r=6 2j < m+r 8 < 9 Structure is statically indeterminate. To make structure statically determinate we need to remove a redundant reaction. Each joint B, C and D has two reactions (vertical and horizontal force) so we can remove one reaction force and problem is now statically determinate. We can remove vertical reaction at joint C. 2j = m+r 8 = 8
14. Statically Indeterminate Structures Compliance Method – structure 1 V1 is vertical displacement at joint A So vertical displacement at joint C = V1 because there is no load in member AC
20. Compliance Method- Example Two steel and aluminium tubular components of a length L are fitted concentrically. They are loaded with a compressive force P through rigid end plates as shown. By using compliance method determine: 1. The shortening of the assembly 2. Compressive forces in steel cylinder and aluminium tube Cross sectional areas: Al = A AL St = A ST
21. Compliance Method- Solution This problem is statically indeterminate – The equilibrium equation is P AL + P ST = -P There are no other equations from force equilibrium. We can solve this problem using the ‘compliance method’ by removing the reaction above the steel OR the aluminium. In my solution I remove the reaction force above the steel portion Cross sectional areas: Al = A AL St = A ST
22. Compliance Method- Solution = + Statically Structure 1 Structure 2 Indeterminate Structure has been divided into 2 structures. These 2 are solved using statics.
26. Temperature Effects So far only mechanical loads have been considered at room temperature (T 0 ). If a bar is heated up, even without the involvement of mechanical loads, the bar will deform or expand. For the bars made of isotropic and homogeneous material, such expansion will take place in all three dimensions. Imagine that a simple rectangular bar of length L is heated to an arbitrary temperature T (>T 0 ). A uniform expansion by an amount of in which is known as the coefficient of linear thermal expansion (material constant). Unit: 1/ 0 C (the reciprocal of degrees Celsius). R ecalling definition of the strain gives thermal strain as:
27. Temperature Effects Thermal strain is a dimensionless and is positive in expansion and negative in contraction. There is no shear thermal strain or distortion. Thermal strain of a moderate amount is reversible and disappears when temperature source is removed (elastic behaviour). The mechanical properties of a material do not change when temperature fluctuates moderately. When both thermal and mechanical loads are present, its overall strain is calculated by
28. Temperature Effects - Stress Thermal strain does not produce stress if a structure is not constrained as in the case of statically determinate structures. If a structure is constrained like statically indeterminate structures, thermal stress will be developed and is calculated by A Young’s modulus decreases when the increase of temperature becomes very significant. It is noticeable that thermal stress doesn’t depend on the cross-sectional area unlike the mechanical stress.
29. Temperature Effects - Example Consider a mild steel bar AB completely fixed at both ends as shown in the figure. The length of the bar is L and the cross-sectional area is A. The bar is uniformly heated up to 60 0 C from the room temperature of 20 0 C. E = 220 GPa and =12e-6 o C -1 Determine the maximum thermal stress developed in the bar. T L R R B A
30. Temperature Effects - Solution We are unable to evaluate the value of the reaction force using statics – this is a statically indeterminate problem. The internal force is P AB . We can solve the problem by using the compliance method. To do this we remove one of the reactions and allow free expansion. We can then apply a load R to give a displacement equal to the expansion. This force will be the required force allowing us to calculate the thermal stress. T L R R B A