正交各向异性薄板的弹塑性屈曲分析  

Elasto-plastic Buckling Analysis for Orthotropic Plates

作　　者：刘腾喜[1] 黄世清[2] 傅衣铭[2] 丁皓江[1] 

机构地区：[1]浙江大学建筑工程学院,杭州310027 [2]湖南大学工程力学系,长沙410082

出　　处：《力学季刊》2002年第4期552-557,共6页Chinese Quarterly of Mechanics

基　　金：国家科委九五攻关项目基金(95-A22-03-04)

摘　　要：本文应用混合硬化正交各向异性塑性理论和屈曲的能量法则,推导了正交各向异性薄板在面内压缩情况下的弹塑性稳定方程,计算了相应的临界荷载,并讨论几何形状、边界条件及诱导荷载比等对临界应力的影响。分析表明材料的各向异性性质对弹塑性临界应力有较大的影响。Based on the plastic theory of mixed hardening orthotropic material and the energy principle of buckling, the elasto-plastic stability equations were established and the critical stresses were calculated for orthotropic plates under in-plane pressing. The influences of geometry of plates and ratio of loads along two directions on the elastic-plastic critical stresses were discussed. The numerical examples show that the influence of orthotropy of material is unignorable.

关 键 词：正交各向异性 弹塑性 屈曲 临界应力 

分 类 号：O344.3[理学—固体力学]