论文部分内容阅读
分析了三个主剪应力对材料屈服的影响，提出了双τ２屈服准则，并建立了一个统一表达式．分析结果表明，所建立的屈服准则，包含了Ｍｉｓｅｓ准则和双剪应力屈服准则，以及介于二者之间的一族屈服准则．这些准则不仅满足Ｄｒｕｃｋｅｒ公设的屈服面外凸性条件，而且与材料性质有关，即不同的材料对应着不同的屈服准则，Ｍｉｓｅｓ准则和双剪应力准则均为该统一表达式的特殊形式．
The influence of three principal shear stresses on the yield of the material is analyzed. The double τ2 yield criterion is proposed and a unified expression is established. The analysis results show that the established yield criterion includes Mises criterion and double shear stress yield criterion and a set of yield criterion between the two. These criteria not only satisfy Drucker’s yield surface convexity conditions, but also relate to the material properties. That is, different materials correspond to different yield criteria. The Mises criterion and the double shear stress criterion are all special forms of the unified expression.