用无缝宽的光测模型试验和位移不连续边界无法研究了压剪条件下缝面和缝端的能量分配和敏感性。试验和计算表明压剪裂纹在缝端存在强烈的应力集中区，属于断裂问题，应由韧性判别，由实验得到的应力场和计算应力场在整体上很相近，但在缝端相差较大，压剪缝延伸可用离缝端一定距离的应力当量韧性来判断。 It is impossible to study the energy distribution and sensitivity of the seam and the seam end under the conditions of pressure-shear with a seamless wide photometric model test and displacement of discontinuous boundaries. Experiments and calculations show that there is a strong stress concentration zone at the crack end of the compression shear cracks, which belongs to the fracture problem and should be judged by the toughness. The stress field and the calculated stress field obtained by the experiment are similar in general, Slit shear extension can be used from the seam end of a certain distance from the equivalent stress toughness to judge.