The adaptability of steel 45 to low-cycle deformation from 100 to 1000 cycles at different constant strain amplitudes, characterised by the effect of plastic-strain stabilisation, is considered. In this study, the proposed structural–temporal model of cyclic deformation simultaneously predicted the stress-strain dependence and the effect of plastic-strain stabilisation based on hysteresis width. Experiments show that range of cycles for stable plastic deformation decreases with an increase in the strain amplitude and strain rate. The proposed model takes into account deformation history experimental data of low-cycle deformation of steel 45 and the presence of an established stabilisation effect.

考虑了在不同的恒定应变幅度下，钢45对100到1000次循环的低循环变形的适应性，其特征在于塑性应变稳定作用。在这项研究中，所提出的周期性变形的结构-时间模型同时预测了应力-应变依赖性以及基于滞后宽度的塑性应变稳定效应。实验表明，稳定塑性变形的循环范围随着应变幅度和应变速率的增加而减小。所提出的模型考虑了钢45的低周变形的变形历史实验数据以及已建立的稳定效应。