摘要
对循环软化45碳钢的单轴应力循环下的平均应力、应力幅值以及先前应变循环对棘轮效应的影响进行了实验研究;并对循环硬化的304不锈钢进行了多种非比例循环加载路径下路径形状、路径等效应力幅值、平均应变与平均应力对材料棘轮变形行为的影响实验.发现平均应力和应力幅值及其历史对于材料的棘轮行为都有很大的影响.
An experimental study was conducted to explore the effects of the mean stress, stress amplitude and previous strain on the ratcheting of cyclic softening 45 carbon steel under uniaxial stress, and to investigate the effects of the path shapes, the equivalent stress amplitudes, the mean strain and mean stress on the ratcheting behavior of cyclic hardening 304 stainless steel under several nonproportional loading paths. It is found that the mean stress, stress amplitude and their history have very significant influence on the racheting behavior.
出处
《固体力学学报》
CAS
CSCD
北大核心
2005年第2期125-131,共7页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金(10372086)
留学回国人员科研启动基金资助.
