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基于统一强度理论,考虑中间主应力效应及拉压不等特性,对双层和多层组合厚壁圆筒进行弹塑性分析,分别建立了材料相同双层厚壁圆筒最佳分层半径、套装压力和套装过盈量的基本解,以及多层组合厚壁圆筒的弹塑性统一解,得出统一强度理论参数、拉压比、半径比和组合筒体层数对统一解的影响特性.该结果具有通用性,适用于拉压异性组合厚壁圆筒压力容器的相关问题;考虑中间主应力的影响,能充分发挥组合筒体的强度潜能,为组合厚壁筒的设计及工程应用提供一定的参考.
Based on the unified strength theory, considering the effect of intermediate principal stress and the characteristics of tension and compression, the elastic-plastic analysis of double-layer and multi-layer combined thick-walled cylinders was carried out. The optimal layered radius of the same double- The basic solution of the package pressure and the package interference, and the elastic-plastic unified solution of the multi-layer combination of thick-walled cylinder, the unified strength theory parameters, tension and compression ratio, radius ratio and the effect of the combination cylinder layer on the unified solution The results are general and applicable to the related problems of tensioning and pressure-bearing thick-walled cylindrical pressure vessels. Taking into account the influence of middle principal stress, the strength potential of the combined cylinders can be fully utilized for the design and engineering application of the combined thick- Provide some reference