Subject Datasheet

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Budapest University of Technology and Economics
Faculty of Transportation Engineering and Vehicle Engineering
1. Subject name Structure analysis
2. Subject name in Hungarian Szerkezetanalízis
3. Code BMEKOJSM609 4. Evaluation type exam grade 5. Credits 4
6. Weekly contact hours 2 (10) Lecture 0 (0) Practice 2 (11) Lab
7. Curriculum
Vehicle Engineering MSc (J)
 8. Role
Mandatory (mc) at Vehicle Engineering MSc (J)
9. Working hours for fulfilling the requirements of the subject 120
Contact hours 56 Preparation for seminars 18 Homework 20
Reading written materials 12 Midterm preparation 4 Exam preparation 10
10. Department Department of Railway Vehicles and Vehicle System Analysis
11. Responsible lecturer Dr. Béda Péter
12. Lecturers Dr. Béda Péter, Devecz János
13. Prerequisites  
14. Description of lectures
Notion of numerical structure analysis. Numerical model generation from a geometrical model. Theory and application of the finite element analysis in the vehicle technology. Theoretical background of the finite element analysis method (FEA). Improvement of the solution using discretization and polynomial degree increase, method of p-elements and h-elements. Material models: linear, elasto-plastic and hyperelastic ones. Structure of finite element models. Simplification possibilities of geometrical models. Geometry discretisation: mesh generation, notion of mesh independence. Structure of a stiffness analysis: load types, forces, torques, bearing-like loads. Constraints: ideally stiff constraints, elastic constraints. Evaluation of deformation and stress fields. The Galerkin method. Elliptical and parabolic partial differential equations and their solutions. Eigenvalue exercises. The Navier equation and the convection-diffusion energy equation. Matrices of the discretized equations (mass, damping, stiffness). Unicity conditions of the result, initial and limit conditions. Structure of a thermal (convective-diffusive) analysis. Load types, heat sources, convection, heat radiation. Constraints, fixation of temperatures and gradients. Evaluation of temperature and thermal flux fields. Structure of a natural frequency analysis. Evaluation of natural frequencies and vibration modes. Application of FEA for lifetime optimisation for load varying in time. Bases of structure optimisation (size, shape, topology) theory. Methods for gradient free optimum seeking in the structure optimization. Model building, setup of design variables, parameters and conditions. Evaluation of the optimization result. New model building from the result of the optimization process. Consideration of ability for manufacturing and realisation. Application of reverse engineering methods during rebuilding the model. Comparative FEA of the original and the optimised model.
15. Description of practices
 
16. Description of labortory practices
Guided and individual problem solving
17. Learning outcomes
A. Knowledge

  • the student knows the finite elements theory and the model building
  • knows the limits of the approximative solution and methods to increase precision
  • knows the various material models and their application
  • knows the methods for loading and constraining
  • knows the mathematical background of the solution and the convergence properties
  • knows the variuos modeling techniques to extract a given physical quantity as result
  • knows methods for part optimisation
B. Skills

  • the student is able to build a finite elements model that suits the geometry of the given structure
  • is able to build up a model that produces the results that have to be studied
  • is able to get a result with required precision and to estimate its plausibility
  • is able to optimize the model upon the given conditions
  • is able to create a new geometry based on the optimisation results
  • is able to evaluate the realized work upon the numerical results
C. Attitudes

  • the student makes an effort to gather all the available informations in a given domain
  • Cooperates with his fellow students and the teacher
  • is open minded towards new and innovative ideas and researches
  • uses informatical and computational devices for his work
D. Autonomy and Responsibility
  • the student is conscient about his responsibility towards the society and his company
  • asks for the colleagues' expertise and judgement when working
  • considers challenges with responsibility
18. Requirements, way to determine a grade (obtain a signature)
For signature: determined points from 1 semestrial project (teamwork), 1 non-compulsory test, 1 shorter homework. Final grade equals to the result of the exam.
19. Opportunity for repeat/retake and delayed completion
Second test possibility for those not present on the test, possibility of delayed deadline for project work
20. Learning materials
Slides and examples in electronic format
Effective date 10 October 2019 This Subject Datasheet is valid for 2024/2025 semester I