CAJ | 학술논문

基于雨流计数统计法，研究了将道路采集时序数据转化为当量伪损伤程度的循环载荷的方法，以及基于副车架各向载荷的模拟试验方法。根据累计疲劳损伤、材料应力-应变迟滞回线等原理，建立了车辆道路载荷谱与室内模拟试验加载谱的相关性转化映射关系。以某车型副车架为例进行了耐久性能试验。结果表明，所提出的转化方法能够在保持载荷累计疲劳损伤的同时，将长时间作用的实际道路谱载荷转化为较短作用时间并易于实现的循环载荷，从而快速、有效地进行室内道路耐久模拟试验。
기우우류계수통계법，연구료장도로채집시서수거전화위당량위손상정도적순배재하적방법，이급기우부차가각향재하적모의시험방법。근거루계피로손상、재료응력-응변지체회선등원리，건립료차량도로재하보여실내모의시험가재보적상관성전화영사관계。이모차형부차가위례진행료내구성능시험。결과표명，소제출적전화방법능구재보지재하루계피로손상적동시，장장시간작용적실제도로보재하전화위교단작용시간병역우실현적순배재하，종이쾌속、유효지진행실내도로내구모의시험。
Based on rainflow counting method, the cyclic load method which transfers time series data into equivalent psudo-damage degree, and the simulative test method based on subframe load were studied. Based on accumulative fatigue damage, material stress-hysteresis strain loop theory, the correlation conversion mapping between vehicle road load spectrum and vehicle interior simulation test loading spectrum was established. Durability performance test was carried out with a vehicle subframe as research object. Test results show that the proposed conversion method can maintain load accumulative fatigue damage, meanwhile it can convert the real road spectrum load into cyclic load, for rapid and effective indoor road durability simulation test.