厚壁圆筒热-结构耦合应力分析  

Calculating for Thermo-mechanical Coupling Stress in Thick Wall Cylinders

作　　者：申彪[1] 廖振强[2] 李洪强[2] 董应超[1] SHEN Biao;LIAO Zhenqiang;LI Hongqiang;DONG Yingchao(School of Automobile and Traffic Engineering,Nantong Vocational University,Jiangsu Nantong 226007,China;School of Mechanical Engineering,NUST,Nanjing 210094,China)

机构地区：[1]南通职业大学汽车与交通工程学院,江苏南通226007 [2]南京理工大学机械工程学院,南京210094

出　　处：《弹箭与制导学报》2019年第3期49-52,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(51375241)资助

摘　　要：以自动武器身管为研究对象,建立了身管的厚壁圆筒模型,采用解析法、二维有限元方法和三维有限元方法,分析了厚壁圆筒在热-结构耦合作用下的径向应力、环向应力、轴向应力和等效应力的关系,并对厚壁圆筒应力场的边缘效应进行了分析。结果表明:厚壁圆筒热-结构耦合应力的解析解和有限元解吻合较好,其中三维有限元模型可计及轴向长度的影响,适用于边缘效应的研究;通过改变内压或温度场,耦合应力是可以设计和优化的。The thick wall cylinders model was established according to study of a certain automatic weapon barrel.The relation of the radial stress,tangential stress,longitudinal stress and equivalent stress in thick wall cylinders endured interior pressure and temperature loads was analyzed by traditional analytic method,2D finite element method(FEM)and 3D FEM respectively.Edge effects of the stress field in thick wall cylinders were also analyzed.The results show that the analytic solution of the thermo-structural coupling stress of the thick wall cylinder agree well with the finite element solution.The three-dimensional finite element model can be used to study the effect of the axial length,it is suitable for the analysis on edge effects,and the coupling stress could be designed and optimized by changing the interior pressure or temperature loads.

关 键 词：厚壁圆筒 热-结构耦合 边缘效应 等效应力 

分 类 号：TJ203.1[兵器科学与技术—武器系统与运用工程]