请教一下 abaqus里在后处理中，怎么显示剪切应力？

在ABAQUS中，一般是把X轴当做1轴，Y轴当做2轴，Z轴当做3轴；那么： S11就是X轴向的应力，正值为拉应力，负值为压应力; S22就是Y轴向的应力，正值为拉应力，负值为压应力; S33就是Z轴向的应力，正值为拉应力，负值为压应力; S12就是在YZ平面上，沿Y向的剪力; S13就是在YZ平面上，沿Z向的剪力; S23就是在XZ平面上，沿Z向的剪力; 由于剪力的对称性：S12=S21， S13=S31， S23=S32

For components of stress, strain, and other tensor quantities 1, 2, and 3 refer to the directions in an orthogonal coordinate system. These directions are global directions for solid elements, surface directions for shell and membrane elements, and axial and transverse directions for beam elements.