principle of virtual work

With the help of variation method, virtual work principle and cubic hermite element, the author puts forward a finite element method to solve the problem of beam vibration on elastic foundation.

本文应用变分形式、虚功原理、Hermite三次元，提出弹性地基梁振动问题的有限元方法。

On the Principle of Complementary Virtual Work in the Finite Displacement Theory of Elasticity

关于有限变形弹性理论中的余虚功原理

On the Expression and the Proof of Virtual Work Principle for Deformable Body

关于变形体虚力原理的表述及证明

Based on the ideas of force method and virtual-work principle, the calculation formulas of the fixed-end forces in element-system structures were deduced. It was found that the fixed-end forces of element were the function of the creep coefficient and the elastic fixed-end forces of the element.

本文根据徐变分析的力法和虚功原理，推导出杆系结构一次加载的单元徐变固端力计算公式，发现单元的徐变固端力是杆件的徐变系数和弹性杆端力的函数。

On the Sufficiency of Virtual Work Principle for Deformable Body

论变形体虚功原理的充分性

A Problem in Application of Virtual Work Principle to Spherical Coordinate System

球坐标中应用虚功原理应注意的一个问题

This essay introduces a method of teaching the concept of virtual displacement by using the principle of work of simple machines, and the combination of the concept of virtual displacement with the principle of virtual work.

本文以简单机械做功的原理为线索、将虚位移的概念和虚功原理的基本内容相结合，介绍了讲解虚位移的方法。

Then, the principle of virtual work is used to derivate the equilibrium condition of CM.

在以上基础上, 应用虚功原理,推导出柔性机械稳态的条件.

A compound model including discrete Kirchhoff theory ( DKT) pate shell element and membrane element is introduced into virtual work rate principle of elasto plastic finite deformation.

将离散Kirchhof理论（DKT）平板弯曲单元和薄膜单元的组合模型引入到弹塑性有限变形的虚功率增率型原理中。

Based on the third order zigzag displacement model, a bending theory for laminated composite plates in an initially stressed state is derived by use of the principle of virtual work.

基于三阶折线位移模型，利用虚功原理导出了含初始平面应力的层合复合材料板的弯曲理论。

Through the virtual work principle and the theory of arch, the ultimate bearing capacity of shell structure analysis, find easy calculation formula for calculating the bearing capacity and application.

通过虚功原理及屈服线理论，对拱壳结构的极限承载力进行分析，找到便于实际工程计算及应用的承载力计算公式。