...strain rate dependence; tensile properties; molecular dynamics [gap=31374]关键词：超细镍纳米线；温度相关性；应变率相关性；拉伸性能；分子动力学模拟 ...
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同时，基于粘弹性应力分析模型得到管材蠕变的应变率逐渐减小，由于聚乙烯的屈服应力具有明显的率相关性，屈服应力也随之逐渐减小。
It is found that hoop stress increases due to reduction in wall thickness of HDPE pipe, while yielding stress decreases owing to decrease of strain rate.
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