摘要
本文通过拉伸实验研究了国产聚碳酸酯板的力学行为,得到了这种材料在不同应变速率下的真实应力—应变曲线。实验结果表明:聚碳酸酯为应变率敏感材料,在达到峰值应力之前,泊松比接近0.5,出现颈缩之后,其泊凇比远超过极限值O.5。
The mechanical behaviour of polycarbonate (PC) is studied in this paper by tensile experiments. A set of true stress—strain curves for different strain rates is obtained. It points out that PC is a kind of sensitive materials to the strain rate. Experimental results also show that Possion ratio of PC is about 0.5 before peak stress and is great beyond the limit value 0.5 after necking.
出处
《工程塑料应用》
CAS
CSCD
北大核心
1992年第1期39-42,共4页
Engineering Plastics Application
关键词
聚碳酸酯
应变率
拉伸
polycarbonate, strain rate, stress—strain, Possion ratio
