When this method is used for isotropic or mixed hardening, it is still exaet for radial loading, and is an accurate approximate solution for noa-radsal loading.

• 将它推广应用于各向同性硬化材料和混合硬化材料时,对于径向加载情况,此积分仍是精确解; 对于非径向加载情况,此积分是具有很高精度的近似解。