Master Thesis - Optimal analysis procedure for dynamic FE simulation of car door close cycle

Personality / Commitment

Quality has been for long one of the major focus areas in the automotive industry. One of the biggest factor behind continuous quality improvements is the calculation-driven product development, which has a long history in the automotive industry. In order to keep up with the competition and customer expectations there is always a need for continuous development of the analysis procedures as well. The accuracy, lead-time and cost in the analyses are a few examples where there is always a need to improve to deal with the fast-phased design cycles that exists today.

The goal in this thesis suggestion is to develop the procedure to simulate the event of closing of a car door. A car door contains wide range of different material, joints and complex mechanisms. Some examples of the complex parts included are the air-filled rubber-seals, hinges and locking-mechanism. In additional the event is time-dependent, where mass/inertia and dynamic behaviour are governing. To capture the dynamic effects a so called transient FE (finite element) analysis is needed. Today these analyses are carried out in the FE software Nastran with transient implicit analysis, and the goal for the thesis is to evaluate/develop methods to use the FE software LS-Dyna with transient explicit analysis. Both Nastran and LS-DYNA are FE softwares widely used in the automotive industry. Here there are several possibilities for improvements to better capture the reality, eg. air evacuation in the door seals, dynamic behaviour of the locking-mechanism and door stop, etc.

Keywords: Automotive, Finite element analysis, Nastran, LS-Dyna, dynamic/transient analysis.

Job / Skills

Objectives:
- Perform a literature study to identify the key methods for modeling and analyzing the dynamic car door closing event and transient analysis in Nastran/LS-DYNA.
- Develop with the support of CAE engineers finite element models of the car door system, which has enough detail to capture the dynamic behavior and ingoing forces, accelerations, stresses, displacements, etc.
- Improve specific models for key components/mechanisms, which are believed to contribute to more accurate results.
- Conduct a parameter study of the ingoing parts and physical properties in order to optimize both the analysis and design.
- Validate the analyses with both analysis and test data.

If you have any questions regarding this Thesis, contact acting Group Manager Daniel Rickert at daniel.rickert@alten.se

Information

Ansökningstiden : 05/11/2018
Kontakt : Fanny Strömberg
Region : Sweden - Västra Götaland - Gothenburg