摘要
在考虑剪切变形对压杆弹性屈曲影响的基础上,采用摄动法研究了压杆在轴向压力和轴向均布载荷联合作用下的弹性屈曲问题,推导出了压杆弹性屈曲模态函数和屈曲载荷的特征方程,并讨论分析了剪切变形、轴向压力、轴向均布载荷对压杆屈曲的影响。算例分析表明,摄动法计算的结果与Bessel函数法计算的结果相差较小,剪切变形对压杆在轴向压力和轴向均布载荷联合作用下发生弹性屈曲影响不大。
Elastic buckling of compressed bar subjected to combined effect of axial loads was studied with perturbation based on considering the effects of shear deformation. Meanwhile its buckling mode function and characteristic equation of bulking load were derived, and the effect of shear deformation, axial load and axial uniform load on buckling of compressed bar were discussed and analysed. Analysis of examples indicated that the difference of calculated results between perturbation and Bessel function method were rather small, Shear deformation had little effect the elastic buckling of compressed bar subjected to combined effect of axial loads.
出处
《强度与环境》
2009年第6期45-49,共5页
Structure & Environment Engineering
基金
湖南"十一五"重点建设学科项目资助(湘教通[2006]180号)
关键词
剪切变形
轴向载荷
屈曲
shear deformation
axial loads
buckling
