梁的拉-弯组合应力损伤分析和预测

A Tensile-bending Damage Analysis and Prediction of Beams

提出了梁的拉-弯组合应力损伤失效分析方法.与Kachanov的材料受载横截面减少定义拉伸损伤变量类似,以梁的弯曲惯性矩减少定义弯曲损伤变量.推导了梁的拉-弯组合应力损伤基本方程.并且提出了便于工程应用的梁拉-弯组合应力损伤失效预测方程.

Based on the basic assumptions of tensile-bending damage of beams, simple evolution equations of damaged beams are derived. The nature of tensile-bending damage failure of beams is discussed in details. For the simplicity of failure prediction in engineering, the evolution law of tensile-bending damage variable is transformed into a simple form.