Abstract
Fatigue simulation is executed for a car body. Loading spectra are collected by real-vehicle test on enhanced road surfaces, and the load history for each interface point is acquired by using multibody dynamics virtual iteration. Based on a finite element model and the mode superposition method, transient response of the car body is simulated. And the stress history is obtained using the modal stress recovery technique. The S-N method is applied to predict fatigue damage distribution of the full car body. In the fatigue analysis, material Haigh diagrams are defined to introduce the mean stress influence and the critical cutting plane method is applied to treat the multi-axial stress. Based on the presented numerical scheme, fatigue analysis and structural improvement for the car body can be carried out at the earlier stage of the vehicle development project.
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Wang, P. (2017). Fatigue Analysis of Car Body Structure Based on Transient Response. In: Proceedings of SAE-China Congress 2016: Selected Papers. SAE-China 2016. Lecture Notes in Electrical Engineering, vol 418. Springer, Singapore. https://doi.org/10.1007/978-981-10-3527-2_44
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DOI: https://doi.org/10.1007/978-981-10-3527-2_44
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Publisher Name: Springer, Singapore
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Online ISBN: 978-981-10-3527-2
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