摘要
本文考虑轴向应力波效应，利用分叉理论研究各种支承半无限长弹塑性梁的动态屈曲问题。在轴向阶梯载荷和脉冲载荷冲击下得到了梁的临界屈曲载荷及初始屈曲模态。其结果与实验现象相一致。同时也为研究结构动态屈曲问题提供了有效途径。
With the aid of the axial stress waves and bifurcation theory,we discuss the dynamic buckling ofsemi-infinite elastic-plastic beams with various end supports. The critical buckling load and mode areobtained when the end of beams is impacted by step and impulsive axial loads. Results correspond withthe phenomenon in experiments.The study can provide a method for solving some other problems.
出处
《应用力学学报》
CAS
CSCD
北大核心
1995年第3期16-20,共5页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金
关键词
弹塑性
梁
应力波
动态屈曲
临界载荷
轴向
elastic-plastic beam,stress wave,dynamic buckling,critital load.
