梁的循环弯曲蠕变脆断损伤失效分析和预测

A Creep Damage Failure Analysis and Prediction of Beams under Cyclic Bending Moment

提出了梁的循环弯曲蠕变损伤失效分析方法，推导了梁的循环弯曲蠕变损伤基本方程，以梁的弯曲惯性矩减少定义弯曲损伤变量。给出了便于工程应用的失效预测方程。

In this paper, a simple evolution equations of cyclic bending creep damaged beams are derived, in which the definition of the bending damage variable is defined by reduction of moment of inertia similar to that of tensile damage variable defined by reduction of loading area (Kachanovs model). For the simplicity of failure prediction in engineering, the evolution law of bending damage variable is adapted as a simple form.