【摘要】 针对现有方法在估算多级载荷作用下的剩余强度时存在的不足,文中在Schaff提出的剩余强度模型的基础上提出等损伤比剩余强度模型,并用于多级载荷作用下剩余强度的估算,给出多级载荷作用下剩余强度的退化模型公式。此剩余强度退化模型计算公式把后期计算建立在前期剩余强度的基础上,适于递归计算。由于采用等损伤比模型,适用于任意级载荷作用或随机载荷作用下的剩余强度估算,因此适用范围更广。更多还原

【Abstract】 Aiming at the deficiencies of existing methods in estimating residual strength under multi-levelloads, based on Schaff’s residual strength model, an equivalent damage ratio model is put forward,and is applied to estimate residual strength under multi-level loads. Finally a run-of-mill formula is given. Using the given formula it is convenient to estimate residual strength through recursive computation. As a result of equivalent damage ratio model, it can be applied to an arbitrary load history, so it has a wider applicable range than the original Schaff model.更多还原