【摘要】 本文给出了净截面为多向应力状态时Ｌｒ参量的新定义；同时给出了在轴向力、弯矩、扭转及内压联合载荷作用下Ｌｒ的诸计算方法。Ｌｒ的数值解可由解给出的联立方程式得到。进一步又给出了Ｌｒ的图解法和Ｌｒ的两个近似表达式。更多还原

【Abstract】 Abstract A new definition of L r parameter is made and the L r parameter evaluation of Circumferentially Cracked Pipes under the Combined Loads of Axial Force,Bending Moment,Torsion and Internal Pressure is carried out.Numerical solution of L r can be obtained by solving simultaneous equations.Further the engineering graphics evaluation and approximate expression for L r are given.更多还原