应力和应变关系的几何图解

Geometric Graphics of the Relationshipof Stress and Strain

本文应用空间解析几何的理论来解决材料受到塑性变形时的主应力和主应变关系的求值问题。应用图解的方法将力学中较为复杂的问题简捷化，并作了数学上的推导。

The miajor research objective in this paper is how to utilize the theory (the analyticgeometry of three dimensions) in order to solve the problem in seeking the value of the rela-tionship between main stress and main strain of material when plastic defor mation occms inmaterial. This paper simphies more complicaled problems in mechanics by means of graphicsand in voles mathematic deductions as well.