摘要
本文用与[1]相同的几何方法,由弯曲扭复合应力下的疲劳规律——椭圆弧线方程推广得到二向及三向主变应力下的疲劳条件,传统的最大应力、最大线应变强度理论都是所导出结果的特殊情况。
This paper popularizes the Ellipse Arc law under the combined bending and torsion fatigue to biaxial and tri-axial stress systems,in the geometrical method.The result show the maxi- mum stress theory and the maximum strain theory are it's the exceptional cases.
