基于AutoCAD用索多边形法图解静力学问题

Graphic Methods of Statics Problems with Funicular Polygon Method Based on AutoCAD

提出在空间任意力系的求解中,应用画法几何正投影原理,将空间任意力系降维成两个假设的平面任意力系,再用索多边形法分别图解,然后升维到空间,得到所要求的结果.在AutoCAD条件下,通过索多边形法,将画法几何原理与静力学基本原理结合起来,实现了对空间任意力系问题的图解.最后,采用传统解析法验证了求解结果的准确性.

With the application of descriptive geometry theory of orthographic projection, the dimension of the spatial arbitrary force system can be reduced into two hypothetical coplanar force systems, and soluted graphically with the funicular polygon method respectively, then the dimension is ascended to the space, and the required results is obtained. Under the environment of AutoCAD, with the combination of funicular polygon method and the basic principles of statics, the solution can be achieved on the spatial arbitrary force system problems. Finally, the accuracy of the solution is verified by the traditional analytical method.