摘要
应用MTS809系列电液(elec-hydrolic)伺服实验机及Teststar控制系统,对16Mn进行了应力控制的单轴及多轴非比例循环实验。研究了应力幅值大小及其历史对单轴及多轴棘轮效应的影响,结果表明,随着应力幅值的增加,棘轮应变增加,并逐步趋于稳定;同时,先前较大的应力幅值历史遏止了后继较小应力幅值下的棘轮效应。
The experiments for 16Mn steel under uniaxial and multiaxial cyclic stressing were performed by using MTS809 testing system and teststar control system,the influences of stress amplitude and its history on ratcheting were investigated. The larger the stress amplitude,the larger the ratcheting strain,and the ratcheting strain stablized gradually. Meanwhile, the stress history of previous larger amplitude made the subsequent ratcheting shakedown.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2010年第2期311-314,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
教育部科学技术研究重点项目(02132)
关键词
非比例循环
棘轮效应
加载历史
non-proportional cycle
ratcheting
loading history
