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Life Prediction for Lighting Bulb Shield Designs Subjected to Random Vibration
Technical Paper
1999-01-0705
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, a CAE (Computer-Aided Engineering) methodology to simulate the vibration test and predict fatigue life of head lamp bulb shield is presented. A modal analysis is performed first to determine the critical elements from the strain energy density distribution patterns. A random vibration frequency response analysis is then performed to monitor the stress response power spectral densities (PSDs) for critical elements due to the g-load input PSDs, measured at the mounting point in all three directions. Fatigue life can be estimated based on the stress response PSDs and material S-N curve by using Dirlik's method. The fundamentals for frequency domain fatigue analysis are reviewed and a case study with test correlation is then presented.
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Citation
Zhang, Y. and Usman, M., "Life Prediction for Lighting Bulb Shield Designs Subjected to Random Vibration," SAE Technical Paper 1999-01-0705, 1999, https://doi.org/10.4271/1999-01-0705.Also In
References
- Newland, D.E. 1993 An Introduction to Random Vibrations, Spectral and Wavelet Analysis 3rd Longman Scientific and Technical
- Bishop, N.W.M. Sherratt, F. 1989 Fatigue Life Prediction from Power Spectral Density Data Environmental Engineering 2 March June