预应变对低合金钢循环非弹性响应的影响

The Influence of Prestrain on the Cyclic Non-elastic Response of Low-alloy Steel

通过预应变试样的低循环疲劳试验，研究了预应变对低合金钢循环应力幅、循环塑性应变幅和循环滞回能的影响。

By means of the low cyclic fatigue experiment of prestrain specimens,the influence of prestrain on the cyclic stress amplitude,cyclic plastic strain amplitude and cyclic hysteretic energy of low-alloy steel is studied,and the changing reason is also analysed.