Deriving Variational Principles in Elasto-dynamics by Undetermined Lagrange Multiplier Method

应用 Lagrange 乘 子法推导弹性动力学的变分原理

Based on two force equilibrium equations of a sliding mass earth pressure is formulated in terms of calculus of variation and is transcribed as the functional extreme-value of two undetermined function arguments by means of Lagrange 's multiplier .

以滑动体静力平衡的两个力平衡方程为基础，引入拉氏 乘 子，将土压力问题以变分学观点来描述，转化为 确定含有两个函数自变量的泛函极值问题。

Action of undetermined multiplier in holonomic and nonholonomic dynamical system

不 定 乘 子在完整与非完整力学系统中的作用

On some flexibility of the method of undetermined Lagrange multiplier

论拉氏 乘 子法的几点灵活性