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根据厚壁圆筒的基本理论并藉助于由经典力学问题和实验所验证的有限元方法对当包容件与被包容件长度不等时的组合圆筒的接触压强及各项装配应力进行了分析和研究。结果表明，在配合段的某些部位，上述应力数值显著增大，这对结构设计和强度计算有重要的理论意义和实用价值
According to the basic theory of thick-walled cylinder and by means of the finite element method verified by classical mechanical problems and experiments, the contact pressure and the assembly stress of the combination cylinder when the length of the containing part and the contained part are not long are analyzed And research. The results show that in some parts of the coordination section, the above stress values increase significantly, which has important theoretical significance and practical value for structural design and strength calculation