Definition of a general implicit orthotropic yield criterion
β Scribed by Sergio Oller; Eduardo Car; Jacob Lubliner
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 281 KB
- Volume
- 192
- Category
- Article
- ISSN
- 0045-7825
No coin nor oath required. For personal study only.
β¦ Synopsis
The definition of an orthotropic yield criterion presents a serious challenge in the formulation of constitutive models based on such theories as elastoplasticity, viscoplasticity, damage, etc. The need to model the behavior of a real orthotropic material requires the formulation of orthotropic yield criteria, and these may be difficult to obtain. For metals, orthotropic yield functions have been formulated by Hill [
π SIMILAR VOLUMES
A new criterion responsible for the first yielding of a material is presented: the Yeh-Stratton criterion (the Y-S criterion). The Y-S criterion requires three yield strengths in simple tension, compression and torsion. It can be shown that the Y-S criterion is applicable to a brittle material as we
A yield criterion for elastic pure-plastic polycrystalline materials is generated under simplified conditions by assuming that for yielding a certain fraction Qe of the total number of slip planes in the material has to be active. This fraction Qe is called the critical active quantity. We suppose Q