【摘要】 正投影基本原理可用于求解工程静力学问题,主要介绍图解空间汇交力系和任意力系的基本方法。通过实例说明图解基本原理的应用,以便进行更深入的研究。大多数工程静力学问题可以用代数方法或图解方法予以解决。有些情况下,代数法较易获解,而在许多情况下,图解方法更加快速而经济,用AutoCAD进行图解将更加有效。更多还原

【Abstract】 The fundamental principle of orthogonal projection can be used to solve problems that arise in the field of engineering statics. This paper deals mainly with the graphical solution of elementary, concurrent force and forces in space problems. Some actual examples are included to illustrate applications of the simple principles and will encourage further study. Most problems in engineering statics can be solved by either graphical or algebraic methods. In some cases the algebraic solution is more readily obtained. In other cases, the graphical solution is quick and more economical. In a number of cases AutoCAD solutions may be well justified.更多还原