摘要
导出了Leipholz杆在大变形条件下的平衡微分方程,并给出了与此相应的拟变分原理。利用给出的拟变分原理分析了两端铰支的Leipholz杆的后屈曲性态,得到了屈曲后的栽荷一位移表达式。
In this paper, adifferential equation of equilibrium for Leipholz bar with a large deflection is derived, and the quasi-variational principle that is consistent with the differential equation of equilibrium is given. Using the quasi-variational principle, the load-deflection expression of the Leipholz bar with simply supported at its ends is obtained.
关键词
Leipholz杆
后屈曲
非保守系统
Post-buckling, Nonconservative System, Quasi-variational principle
