摘要
采用文献［４］导出的任意初始应力作用下的铁木辛柯梁运动微分方程，研究了该梁在初始轴向压力作用时的振动频率与模态，给出了三种不同边界条件下梁的频率方程、振型方程，文中以简支梁为例进行了数值计算。
By use of differential equations of motion of Timoshenko beam under initial non-uniform state of stress , the vibration frequencies and modes of the beam under initial compressive axial loads are investigated, the equations of frequencies and modes of the beam under three boundary conditions are given in this paper. A numerical example is given for hinged-hinged beam, the obtained results are compared with the corresponding results obtained from Euler-Bernoulli beam theory. Key wrods: Timoshenko beam, initial compressive axial load, dynamic behaviour
出处
《西安公路交通大学学报》
CSCD
北大核心
1997年第1期116-120,共5页
Journal of Xi'an Highway University
