论文部分内容阅读
基于双剪统一强度理论对由拉压强度不同材料构成的组合筒的最优过盈配合以及弹塑性极限问题进行了研究,得到了组合筒的接触压力及最优接触压力、最优过盈量以及弹、塑性极限计算公式.与经典弹塑性分析解不同,所得到的解考虑了材料拉压强度的不同以及中间主应力的影响,并包含了两个双剪统一强度理论参数.为了比较方便,还基于库仑-摩尔屈服准则对由拉压强度不同材料构成的组合筒的弹塑性极限进行了分析.讨论了基于双剪统一强度理论所得解与基于库仑-摩尔屈服准则所得解及其他经典强度理论解的关系,分析了材料拉压强度的不同以及中间主应力的影响.
Based on the double shear unified strength theory, the optimal interference fit and elastic-plastic limit problem of the composite cylinder made of different materials with different tensile and compressive strengths were studied. The contact pressure, the optimal contact pressure, the optimum interference margin As well as the elastic and plastic limit calculation formulas.Compared with the classical elasto-plastic analytical solution, the obtained solution considers the difference in tensile strength and tensile strength of the material and the influence of the intermediate principal stress, and includes two theoretical parameters of double shear unified strength.In order to be more convenient , And also based on the Coulomb-Mohr yield criterion, the elastic-plastic limit of composite tube made of different materials with different tensile and compressive strengths was analyzed.According to the results of double shear unified strength theory and those based on Coulomb-Mohr yield criterion and other classical strength Theoretical solution of the relationship between the tensile strength and tensile strength of the material as well as the influence of the middle principal stress.