A technique to determine which loads or combination of loads that contribute to the fatigue damage of a component is proposed. Knowing critical loads allows a designer the opportunity to better optimize designs. This information also helps accelerate durability evaluation procedures (both analytical and laboratory based). The technique involves the use of a computer-based FEA method incorporating conventional fatigue life prediction algorithms to assess component durability on an element-by-element basis. After a global fatigue analysis of the entire component, the critical element(s) are identified. A statistical approach, based on a factorial design of experiments, is then applied to assess the effect of varying combinations of component input loads on the predicted durability of these elements. This approach provides a methodology for keeping computational time to a minimum whilst developing a comprehensive understanding of the behavior of the critical areas. The emphasis is a practical design technique.
Citation: Tebbe, J. and Mathers, M., "Multiple Load Input Sensitivity Analysis Technique for Finite Element-Based Durability Evaluation," SAE Technical Paper 951099, 1995, https://doi.org/10.4271/951099. Download Citation
Author(s):
James C. Tebbe, Michael D. Mathers
Affiliated:
MacNeal Schwendler Corp.
Pages: 11
Event:
International Conference On Vehicle Structural Mechanics & Cae
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the Ninth International Conference on Vehicle Structural Mechanics and Cae-P-290
Related Topics:
Fatigue
Durability
Optimization
Finite element analysis
Mathematical models
Statistical analysis
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