继续增大拉拔速度，拉拔应力变化不大。
The drawing stress did not change when the speed increase further.
在低速拉拔时，拉拔应力随拉拔速度的增加而增大。
The drawing stress increased with the speed rise at low speed.
根据损伤力学的基本原理，利用测量弹性模量和观察金相的方法，研究了在拉拔应力状态下，随变形量的不断增大，材料的损伤特性。
Based on the damage mechanics and metallography analysis, the characteristics of plastics damage of steel wire under high strain deformation were researched.
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