Durability and Multi-Body Simulation

11M1030

Master

German

5.0

only summer term

1 semester

Lightweight construction has become increasingly important in recent years, particularly in the automotive industry, with a view to saving fuel, maximizing payload, etc. New materials, new technologies and adapted construction methods are increasingly being used. In addition to the calculation of component stress, analytical and experimental fatigue strength analysis is indispensable due to the high material utilization. Students learn about and apply methods to optimize designs with regard to the lowest possible use of materials and to carry out service life estimates.

Virtual product development has been used in vehicle technology in increasing depth for many years. An important component of this is the simulation of the driving behavior of vehicles using multi-body simulation (MBS) with software packages such as MSC-ADMS. The results are required, for example, to provide component loads for finite element calculations, to design chassis or to develop virtually actively controlled chassis. Students learn the basics of simulating linear and non-linear dynamic systems and can simulate simple applications, e.g. with MATLAB/Simulink, as well as solve a practical problem with MBS software.

1. Problem definition of fatigue strength 

2. fatigue loading

   2.1 Classification method

   2.2 Load spectrum

3. Stressability

   3.1 Fatigue strength

   3.2 W?hler curve

   3.3 Influencing Parameter

4. Design concepts

5. Calculative service life estimation

   5.1 Damage accumulation hypothesis

   5.2 Equivalent load spectrum

6. FKM guideline

   6.1 Static strength verification

   6.2 Fatigue strength verification

7. Simulation of linear and non-linear dynamic systems

8. Familiarization with MBS software

9. Application of MBS software to a practical problem, e.g. chassis development

The total workload for the module is 150 hours (see also "ECTS credit points and grading").

• Portfolio exam

The portfolio examination comprises 100 points and consists of a one-hour written examination (K1) and two assignments (HA). A maximum of 40 points can be achieved with the written exam, and a total of 60 points (30 points each) can be achieved with the assignments.

Written exam: one hour

2 term papers, 10-20 pages each

Mathematics: matrix calculation, solving equations; mechanics: Statics, dynamics, strength of materials, FEM calculations

• Schmidt, Reinhard

• Schmidt, Reinhard
• Schneider, Waldemar