Research on Low-amplitude Load strengthening characteristic of Automotive Swing Arm

摘要

A program load spectrum compiling method for automotive components was introduced with swing arm as example. Based on low loading strengthening property, a spectrum compiling method considering the strengthening effective loads is put forward, which overcomes the deficiency of the traditional methods, in which only the damage effect of low amplitude loads is considered. By transferring the strengthening loads to the most effective level, the bench tests show that the total cycling blocks decline sharply under homemade 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 automotive parts 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 automotive parts more accurately.