Abstract
The present paper describes an approach to predict fatigue damage of a mechanical system applying modal super-positioning. Initially a dynamic FEM beam model including a nonlinear wheel contact model has been developed for the harvesting vehicle structure. A load history is generated for a specific joint in the vehicle. From the influence matrix for the particular joint fatigue life is determined. For the full 3D solid FE model, modal super-positioning is introduced in order to reduce the computational costs. From modal analysis a limited number of mode shapes can be obtained and full deformation state is determined by modal super-positioning. The developed nonlinear wheel contact model and the modal system are coupled through a 3D beam element. The obtained fatigue life agrees well compared to actual observations and tests performed on a prototype.
| Original language | English |
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| Title of host publication | NWC2009 : NAFEMS : The Analysis Advantage : Perspectives on Engineering Simulation for Today and Beyond : The NAFEMS World Congress 2009 : Proceedings |
| Number of pages | 7 |
| Publisher | The International Association for the Engineering Analysis Community |
| Publication date | 2009 |
| ISBN (Electronic) | 9781874376422 |
| Publication status | Published - 2009 |
| Event | The NAFEMS World Congress : The Analysis Advantage : Perspectives on Engineering Simulation for Today and Beyond - Crete, Greece Duration: 16 Jun 2009 → 19 Jun 2009 Conference number: 12 |
Conference
| Conference | The NAFEMS World Congress : The Analysis Advantage : Perspectives on Engineering Simulation for Today and Beyond |
|---|---|
| Number | 12 |
| Country/Territory | Greece |
| City | Crete |
| Period | 16/06/2009 → 19/06/2009 |
Keywords
- Modal super-position
- Fatigue
- Modal analysis
- Dynamics
- Contact models