活塞缸是准流体保险机构中重要的机械零件 ,其力学性能对引信功能的影响非常大。若设计不当 ,在弹丸发射过程中缸体变形过大 ,活塞不能正常抽出 ,回转体无法回转 ,就会导致引信失效。该文利用ANSYS软件 ,对活塞缸进行了力学分析 ;并根据计算结果 ,对由活塞缸引起的引信失效原因进行了详细的分析。 Piston cylinder quasi-fluid insurance agencies is an important mechanical parts, the mechanical properties of the fuze function is very large. If improperly designed, in the process of projectile launch cylinder deformation is too large, the piston can not be properly extracted, rotating body can not be rotated, it will lead to fuse failure. In this paper, ANSYS software is used to analyze the mechanical behavior of the piston cylinder. Based on the calculation results, the causes of the failure of the fuze caused by the piston cylinder are analyzed in detail.