We know from experimental phenomena that the ductility of materials decreases with increasing numbers of cycles in the process of cycle fatigue loading, from which a new fatigue damage variable D \* based on the material ductility property is defined. Then a continuum damage mechanics model for low-
A continuum damage mechanics model for low-cycle fatigue failure of metals
โ Scribed by Wang June
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 307 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0013-7944
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โฆ Synopsis
Abstnct-A continuum damage ma%nics model for low-cycle fatigue is presented. The rupture time of hot rolled type RS50 steel is predicted by the damage model and compared with those measured with excellent agreement. It is shown that the proposed damage model can predict the rupture time of material more reasonably when stress variation is infinitesimal, or when the stress ratio R approaches unity.
๐ SIMILAR VOLUMES
Experimental results show that the inherent ductility in a material is deflected after cycle loading. Based on the concept of ductility deflection, a new fatigue damage variable D\* for low-cycle fatigue is recommended in this paper. This new damage variable D\* has definite physical meaning and can