Catalogue of questions for final exam

Title of lecture: Simulation in Mechanical Engineering

Part1: Introduction

Reduction of costs using virtual prototyping (page 8) Frontloading (page 11) Philosophy of virtual prototyping (page 17+18) Up-Front information (page 25)

Part2: Numerical Simulation

Why is simulation advantageous? (page 6-8) General procedure of numerical simulation (page 12) What are mathematical and numerical models (page 13+14) Model complexity (page 18) What can simulation be used for? (page 20) What is a dynamical system (page 34) Basic idea of time integration (page 39)

Part3: Digital Mockup

What is a DMU? (page 2+3) Demands on DMU (page 6) DMU functions (page 13)

Part4: Virtual Reality

What is VR and AR? (page 3) Usage of VR und AR in the product life cycle (page 5) Applications of VR (page 6+7) Applications of AR (page 26)

Part5: Finite Element Analysis (FEA)

What is a finite element, node and DOF? (page 9) What does discretisation mean? (page 10+11) List typical finite elements (1D, 2D and 3D) (page 13-15) Types of analysis (page 17) What are restraints and constraints? (page 22) What is the job of the solver? (page 27-32) Visualization of stresses (page 34)

Part6: Multi Body Simulation (MBS)

What is a multi body system? (page 4) Components (elements) of a multi body system (page 5-9) Numerical time integration (page 12) Modes of analysis (page 18) FEA and MBS (page 22) Applications of MBS

Part7: Computational Fluid Dynamics (CFD)

What is CFD? (page 3) Advantages of CFD (page 4-5) Disadvantages of CFD (page 6) Applications of CFD (page 11) When to use CFD? (page 12)

Part8: Fatigue Analysis

Why to use fatigue analysis? (page 4+5) Workflow of fatigue analysis (page 7) What is equivalent stress? (page 9+13) Classification of loads (page 10+11) What is rainflow counting/classification? (page 12) What is a Wöhler diagram (S-N curve)? (page 15) What is the definition of damage? (page 16+17) What is the definition of an endurance safety factor? (page 18) What is a local S-N curve? (page 20+21) What is a Haigh diagram? (page 27)

Part9: Optimization

What is the difference between the conventional development process and optimization? (page 2+3)

What is the difference between topology and shape optimization? (page 6) What is the difference between stress based and damage based optimization? (page 8) What is a design space and frozen areas? (page 10, …)

Part10: Virtual Testing

Describe the work flow of experimental fatigue testing (page 5) What are benefits of a virtual test bench? (page 11) What is “system identification” and what is it used for? (page 16-18)