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Considerations in Conducting Structural Dynamic Analysis of Commercial Vehicle Exhaust System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 31, 2006 by SAE International in United States
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To validate the integrity of a commercial vehicle's exhaust system's structural design is a challenging job. An integrated approach to use both simulation/modeling and hardware testing must be employed to reduce product development cost. In addition to the considerations of the geometry and configuration specs of 70-90 parts and joints as well as material's thermal and mechanical property data in model development, representative loading must be used. For base excitation type of loading, such as the one experienced by the vehicle's exhaust system, one must decide whether to conduct the time domain transient analysis or frequency domain random vibration analysis. Although both methods are well known, few discussions can be found in the literature regarding their effective use in the framework of product design and development. Based on our study, the random vibration method should be used first for identifying high stress locations in the system and for design optimization. The modal transient analysis is conducted for product verification with the focus on the dynamic stress time history data of critical locations and cumulative damage calculation for life prediction. Discussions on advantages and limitations of each method are exemplified by the validation job of a commercial vehicle's after treatment device and system.
CitationLi, J. and Shih, S., "Considerations in Conducting Structural Dynamic Analysis of Commercial Vehicle Exhaust System," SAE Technical Paper 2006-01-3573, 2006, https://doi.org/10.4271/2006-01-3573.
- Shih Shan Kuan Scott Eschenburg Dale “Considerations in the Development of Durability Specifications for Vehicle Drive Train Component Test” SAE Paper # 2003-01-3436
- Shih S. Kolodziej T. Edara R. Ledesma R. Somnay R. “Some Considerations in the Test Bogey Development for Automotive Components” SAE Paper # 2002-01-3126
- Ledesma Ragnar Jenaway Leonard Wang Yenkai Shih Shan “Development of Accelerated Durability Tests for Commercial Vehicle Suspension Components” SAE paper # 2005-01-3565
- Bendat Julius S. Persol Allan G. “Random data: analysis and measurement process” John Wiley & Sons 3rd 2000
- Bishop N W M Sherratt F Fatigue life prediction from power spectral density data. Part 1, traditional approaches and Part 2, recent developments Environmental Engineering 2 1989