正交各向异性圆柱壳的弹塑性屈曲分析  

ELASTO-PLASTIC BUCKLING ANALYSIS FOR ORTHOTRPIC CIRCULAR CYLINDRICAL SHELLS UNDER AXIAL COMPRESSION

作　　者：曾纪杰[1] 傅衣铭[2] 

机构地区：[1]湖南理工学院机电系,岳阳4140001 [2]湖南大学工程力学系,长沙410082

出　　处：《工程力学》2006年第10期25-29,共5页Engineering Mechanics

摘　　要：应用能量原理和正交各向异性材料的混合硬化本构关系,推导出在两端简支条件下轴向压缩圆柱壳的弹塑性临界应力表达式。计算了相应的临界应力。讨论了几何尺寸,材料性能等因素对临界应力的影响。计算结果表明,几何尺寸对弹塑性临界应力的影响较小,而材料的力学性能对弹塑性临界应力有较大的影响。Based on the energy principle of buckling and the mixed hardening constitutive relation of orthotropic material, the formula of elasto-plastic critical stresses was derived and the value of critical stresses was calculated for simply supported orthotropic circular cylindrical shells under axial compression. The influences of geometry and material properties of a shell on its elasto-plastic critical stresses were discussed. The numerical examples show that the effect of geometry on the elasto-plastic critical stresses is not obvious while the effect of material properties on the critical stresses can not be ignored.

关 键 词：固体力学 弹塑性屈曲 能量法 正交各向异性圆柱壳 临界应力 

分 类 号：O344.3[理学—固体力学]