摘要
对由4部分T形杆铰接组成的刚架静力平衡问题,直接求解存在较多的未知约束力,需联立解方程组,过程较繁琐,虚功原理为这类刚架问题的求解提供了新的解法。在虚功原理法中,由于铰链处点属于铰接的2部分,其虚位移有2种表示形式,可得结构各部分的瞬心位置,并得到各支座力。
For the rigid body systems′ static equilibrium problems including four T-shape rods hinged each other,there are many unknown constrained forces by using the direct method.It needs equations to solve the problem,but the process is complicated.Nevertheless,the method of virtual work principle provides a novel scheme in the force analysis for the rigid frame structure.In the virtual work principle method,as the hinge point belongs to the two hinged part,the representation of the virtual displacement has two forms,then instantaneous velocity centre of each parts of the structure is located,and then the support forces are obtained.
出处
《常州工学院学报》
2012年第4期10-12,共3页
Journal of Changzhou Institute of Technology
关键词
铰链
刚架
虚功原理
受力分析
hinge
rigid frame
virtual work principle
force analysis
