Influence of residual stress on the load–deflection curve of diaphragm springs for automobile clutches
✍ Scribed by Yasunori Doman; Toru Fujii; Kazuya Okubo; Hanjun He
- Book ID
- 104342099
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 398 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0389-4304
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✦ Synopsis
Residual stress occurs in either front or rear surface, or both surfaces of diaphragm springs used for automobile clutches due to shot-peening. The present study reveals that the residual stress remarkably affects the load-deflection (P-d) curve of diaphragm springs. Why and how the residual stress affects the P-d curve are also shown. FEM analyses considering both geometrical and material non-linearities of the spring were conducted. The P-d curve was well predicted by FEM as long as the residual stress distribution was well estimated in all directions. A modified analytical approach based on the established formula was presented to easily predict the P-d curve by shifting the coordinate origin.