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.
出处
《力学季刊》
CSCD
北大核心
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)
关键词
正交各向异性
弹塑性
屈曲
临界应力
orthotropic
elastic-plastic
buckling
critical stress
