CAJ | 학술논문

在考虑裂纹闭合效应对疲劳损伤影响的情况下,对Chaboche提出的非线性连续疲劳累积损伤模型进行了修正,得到了疲劳累积损伤及再制造毛坯剩余寿命评估模型,并由对称循环拉压疲劳试验数据得出了修正模型的相关参数.通过二级加载(高低加载和低高加载)拉压疲劳试验对再制造毛坯剩余寿命评估模型进行了验证,结果表明模型计算值和试验值吻合良好,证明修正后的模型能够准确预测再制造毛坯的剩余寿命.
재고필렬문폐합효응대피로손상영향적정황하,대Chaboche제출적비선성련속피로루적손상모형진행료수정,득도료피로루적손상급재제조모배잉여수명평고모형,병유대칭순배랍압피로시험수거득출료수정모형적상관삼수.통과이급가재(고저가재화저고가재)랍압피로시험대재제조모배잉여수명평고모형진행료험증,결과표명모형계산치화시험치문합량호,증명수정후적모형능구준학예측재제조모배적잉여수명.
Chaboche's model of nonlinear continuum fatigue damage is modified based on the impact of crack closure effect on fatigue damage. A cumulative fatigue damage model is developed accordingly to predict the remaining life for condemned products to be remanufactured. The related parameters are concluded from fully reversed fatigue experiment. To verify the proposed model, tension-compression fatigue tests under two levels of load spectrum(high-low loading and low-high loading) are carried out. The results showed that the calculated value and experimental value are in good agreement. It has been proved to be an efficient method to predict the remaining life involved in remanufacturing technology.