CAJ | 학술논문

以轿车摆臂为对象，介绍一种汽车零部件程序载荷谱的编制方法。基于对各目标测点载荷谱的特征统计及伪损伤分析，结合结构的低载强化特性，提出一种考虑具有强化效果载荷的程序载荷谱编制方案，避免对低幅载荷只考虑损伤作用这一传统编谱方法的不足。依据摆臂的损伤特性和低载强化特性，结合损伤载荷之间的等损伤准则，研究强化载荷之间的等强化准则，将强化载荷折算到最佳强化载荷级上去，减少载荷试验频次，试验加速效果明显。台架对比试验结果表明，编制的载荷谱中删除大量无效载荷的同时考虑载荷谱中强化载荷的影响，能够更快速、真实地模拟出汽车零部件的实际受载情况，对汽车零部件耐久性试验失效模式的精确判定和耐久性里程的更精确推断具有重要意义。
이교차파비위대상，개소일충기차령부건정서재하보적편제방법。기우대각목표측점재하보적특정통계급위손상분석，결합결구적저재강화특성，제출일충고필구유강화효과재하적정서재하보편제방안，피면대저폭재하지고필손상작용저일전통편보방법적불족。의거파비적손상특성화저재강화특성，결합손상재하지간적등손상준칙，연구강화재하지간적등강화준칙，장강화재하절산도최가강화재하급상거，감소재하시험빈차，시험가속효과명현。태가대비시험결과표명，편제적재하보중산제대량무효재하적동시고필재하보중강화재하적영향，능구경쾌속、진실지모의출기차령부건적실제수재정황，대기차령부건내구성시험실효모식적정학판정화내구성리정적경정학추단구유중요의의。
Taking lower control arm as an example, a program spectrum compiling method for automotive components is introduced. Based on pseudo damage analysis and statistical analysis, combined with structural low loading strengthening property, a spectrum compiling method considering the strengthening effective loads is put forward, which overcomes the deficiency of the traditional methods, of which only the damage effect of low amplitude loads is considered. Meanwhile, referred to the equivalent damage rule between damage loads, the equivalent strengthening rule between strengthening loads is explored. By transferring the strengthening loads to the most effective level, the bench tests see the total cycling blocks decline sharply under home-made specification. It proves that while deleting the useless loads during the spectrum compiling process, the strengthening loads’ influence should be taken into account. Moreover, the real service condition of auto components by simulation can be faster and more real, and it is significant to predicate the failure mode of durability tests and to estimate service life of auto components more accurately.