Under biaxial stress state, magnetization is more easily achieved along the direction of positive strain.

在双向应力状态下，沿正应变方向更易磁化。

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And the effects under the control laws of negative strain rate feedback and positive strain feedback are compared.

比较了应变率负反馈和应变正反馈控制律的控制效果。

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Uniaxial prestrain will obviously improve the forming limit on positive strain ratio zone, while it has little effect on negative strain ratio zone.

单拉预应变路径将显著提高正应变比区的成形极限，而对负应变比区的成形极限影响不大。

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