摘要
以同一变形体的两个彼此独立的状态——变形协调状态和平衡状态，建立位移虚余功和虚余能的表达式，给出了虚应力原理是变形连续体变形协调的必要与充分条件的证明。明确了虚应力原理的变分约束条件和变分自然条件。
Equations for the virtual complementary work and energy of the displacement are set up in this paper,they are based on two independent factors:the condition of compatibility and the equations of equilibrium.It is demonstrated that the virtual principles of stress is the full and essential condition for continuously variable body for variable body.The boundary condition of restriction as well as the natural condition of variation for the virtual principle of streets are given too.
出处
《哈尔滨建筑大学学报》
1998年第2期125-130,共6页
Journal of Harbin University of Civil Engineering and Architecture
关键词
位移虚余功
虚余能
虚应力
变形体力学
virtual work of displacement
virtual complementary energy
virtual stress
