摘要
介绍了用晶体力学方法描述织构板料塑性变形应力应变关系的途径。提出了按M-K理论计算织构板料双向拉伸成型极限的方法。对深冲用铝镇静钢的计算结果与实验结果作了比较,还给出了一些具有常见织构的假想材料在等值双向拉伸时,反映不同取向的凹槽的成型极限曲线。
An approach based on crystal mechanics is introduced to describe plastic behaviour of textured materials. A method is proposed to calculate the limit strain of textured sheet in biaxial stretching. The experimental results of limit strains of an AKDQ steel are compared with the predicted results. The limit strains in. equibiaxial stretching with assumed groove direction are also caculated for some idealized materials containing specific preferred orientations.
