neck-shrink

Analysis of necking under condition of uniaxial tension of low-carbon steel specimen based on gradient-dependent plasticity;

基于梯度塑性理论的单向拉伸低碳钢试样颈缩分析

This criterion is based on the critical thickness gradient C which occurs perpendicular to the necking when the failure develops.

介绍了一种预测板料发生颈缩的新准则——厚度梯度准则,该准则基于当板料发生颈缩时沿垂直于颈缩方向的厚度梯度分布存在着极值C;在板料成形过程中,当其厚度梯度值小于临界厚度梯度值C时,认为板料发生颈缩。

This criterion was based on the critical thickness gradient RC which existed in the direction perpendicular to the necking when the failure developed.

介绍一种预测薄板成形极限的新准则——厚度梯度准则,该准则基于薄板颈缩时沿垂直于颈缩方向的厚度梯度分布存在极值RC。

The necking behaviour in polymer stretching process is reviewed.

综述了聚合物拉伸过程中的颈缩行为,并从研究颈缩行为的一般内容、颈缩不稳定动力学以及本构理论等方面对颈缩行为的发展历史进行了全面的阐述,最后,探讨了聚合物拉伸过程中颈缩行为的抑制,对未来的研究方向提出了有益的见解。