加压管道焊接件稳态蠕变的摄动法分析
Steady-State Creep Analysis of Pressurized Pipe Weldments by Perturbation Method
AI总结：
采用摄动法对加压环向管道焊接件在稳态蠕变下的应力进行分析，通过将未摄动解视为均质管道应力场，并利用辅助线弹性问题定义修正项，简化了多材料组件的参数分析。
摘要：
考虑加压环向管道焊接件在稳态蠕变下的应力分析。材料的蠕变响应由Norton定律控制。通过摄动法获得数值解和解析解，未摄动解对应于均质管道中的应力场。修正项借助辅助线弹性问题定义为应力。获得了界面处环向应力和径向应力跳跃的精确表达式。所提出的技术本质上简化了多材料组件的参数分析。
英文摘要：
The stress analysis of pressurized circumferential pipe weldments under steady state creep is considered. The creep response of the material is governed by Norton's law. Numerical and analytical solutions are obtained by means of perturbation method, the unperturbed solution corresponds to the stress field in a homogeneous pipe. The correction terms are treated as stresses defined with the help of an auxiliary linear elastic problem. Exact expressions for jumps of hoop and radial stresses at the interface are obtained. The proposed technique essentially simplifies parametric analysis of multi-material components.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
