Estimation of the duration life in thermomechanical fatigue using finite element post- processing

[摘要] In this study lifetime of structural parts subjected to thermomechanical fatigue, occurring under concurrent thermal and mechanical cycles is assessed. The special effect of phasing between thermal cycles and strain cycles was analysed. The methodology used was based on finite element post-processing analysis by specialized fatigue software package. A parametric study conducted on a standard specimen under various conditions of loadings had shown that thermomechanical fatigue is a complex phenomenon. In particular, it is not always more damaging than isothermal fatigue as usually believed.

[发布机构] National School of Applied Sciences at Tetouan, B.P. 2222 M'Hannech, Tetouan; 93002, Morocco^1

[效力级别] 材料科学

[关键词] Isothermal fatigue;Parametric study;Post processing;Standard specimens;Strain cycles;Structural parts;Thermo mechanical fatigues (TMF)