摘要
本文用对偶单形法线性规划求解Taylor理论,计算了面心立方和体心立方金属在平面应力条件下各向同性屈服表面。所得结果介于Mises和Tresca屈服准则之间。面心立方金属的计算结果和B-H理论的结果吻合;体心立方金属的结果和Pensil Glide模型的结果基本一致。
The isotropic surfaces of both fce and bcc metals under plane stress were calculated by Taylor theory which was solved with the linear programming dual simplex method. The results of the yield surfaces of both metals are located between Mises and Tresca criteria. The result of fce metal is coincidence with that given by B-H model, and the result of bce is similar to that by Pencil-slide model.
基金
国家教委优秀年轻教师基金
关键词
平面应力
屈服行为
晶体学理论
yield surface, plastic deformation, crystallographic theory
