【摘要】 运用图论理论,建立了静定桁架分析方法与机构运动分析方法的对应关系,将桁架分析中的通路法拓展到平面机构运动分析,提出了连杆机构运动分析的广义回路法.建立了桁架节点位移方程与机构速度方程的对应关系,将桁架有限元分析直接应用于机构速度计算.运用通路法和桁架有限元法建立机构运动方程,方法通用,实现简单,且只与机构中杆件的方位有关,与机构中各杆件的长度无关.更多还原

【Abstract】 The connection between determinate truss analysis methods and mechanism kinematic analysis was established by graph theory. The circuit method from truss analysis was extended to the analysis of planar mechanisms kinematic. A generalized loop method was proposed for the velocity analysis of planar linkages. The relation between displacement equation in truss and the velocity one in linkage mechanisms was given. The finite element analysis of truss was directly used to calculate the velocity of linkages. The mechanism kinematic equations, which were established by the loop analysis and the truss finite element, depend on the orientations of link and are free of their dimensions, being common and easy use.更多还原