The values of plastic strain energy density are affected by the plastic strain amplitude and change with the cycle numbers.
合金的塑性应变能密度受应变幅的影响且具有循环相关性；
A new exponential dissipation model is presented to describe this bilinear material's plastic strain amplitude-fatigue life relation.
利用本文建立的指数衰减模型能够较好地描述材料的非线性塑性应变幅与寿命之间的关系。
The observed phenomenon that both 7000 series alloys tested soften cyclically at smaller plastic strain amplitude and harden at larger plastic strain amplitude is explained.
阐述了观察到的两种7000系列合金在小塑性应变幅下循环软化，而在大塑性应变幅下循环硬化的现象。
In this model, a new kinematic hardening equation was used; the non-proportionality, the effect of temperature and memorization for the maximum plastic strain amplitude were also considered.
该模型给出了一个新的背应力演化方程，引入了非比例度参量，并且还考虑了最大塑性应变幅值记忆效应和温度效应的影响。
The effects of anisotropy, strain rate sensitivity, imperfection and its amplitude and inertia on plastic instability are discussed.
还讨论了材料各向异性、应变率敏感性、不均匀性及其幅度、惯性等因素对塑性失稳的影响。
With the increase of the grain size of H68 brass, the critical plastic strain for the onset of serrations increases while the maximum stress amplitude of serrations decreases.
对于H68黄铜，随着晶粒尺寸的增大，出现锯齿屈服的临界应变量增大，锯齿波的最大应力振幅减小。
With the increase of the grain size of H68 brass, the critical plastic strain for the onset of serrations increases while the maximum stress amplitude of serrations decreases.
对于H68黄铜，随着晶粒尺寸的增大，出现锯齿屈服的临界应变量增大，锯齿波的最大应力振幅减小。
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