摘要
基于“离散加筋”模型 ,考虑了大挠度和材料硬化应变率敏感特性的影响 ,借助增量数值解法研究了环向加筋圆柱壳在轴向流 -固冲击载荷作用下的弹塑性动力屈曲。分别采用类似B -R准则和Southwell方法来确定结构动力屈曲临界载荷。讨论了加强筋。
An increment numerical method is used to analyze the elastic-plastic dynamic buckling of ring-stiffened cylindrical shells under axial fluid-solid impact loading on the basis of discrete stiffeners model, and taking account of large deflections and strain-rate sensitive yielding material properties. The similar B-R criterion and the Southwell method are applied to determinate the emergence of buckling. The effects of ring-stiffeners and strain-rate sensitive yielding material properties on dynamic buckling characteristics and critical loads of cylindrical shells are discussed.
出处
《振动与冲击》
EI
CSCD
北大核心
2001年第4期81-85,74,共6页
Journal of Vibration and Shock
基金
自然科学基金项目资助 (1 980 2 0 1 7)
关键词
环向加筋圆柱壳
轴向弹塑性动力屈曲
临界载荷
材料硬化应变率敏感特性
冲击载荷
ring_stiffened cylindrical shells,elastic_plastic dynamic buckling,critical loads,strain_rate sensitive yielding material properties
