The plastic deformation behaviour of linear polyethylene and polyoxymethylene
The plastic deformation behaviour of linear polyethylene and polyoxymethylene
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线性聚乙烯和聚甲醛的塑性变形行为
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
I. Ward
中科院分区：
文献类型：
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作者：
P. Coates;I. Ward
本文研究了线性聚乙烯和聚氧亚甲基的塑性变形行为，在很宽的塑性应变范围内（变形比高达1.25），它们是应变速率的函数。结果已被检查的概念，一个真正的应力-应变-应变率关系。结果表明，在此基础上，拉伸纤维和挤压棒的结果是相容的，并且可以定义真实的应力-应变-应变率表面。拉伸拉伸和静液挤压工艺方面的这些结果的意义被认为是。速率依赖性的初步讨论。
The plastic deformation behaviour of linear polyethylene and polyoxmethylene has been studied as a function of strain rate over a very wide range of plastic strains (deformation ratios up to ∼ 25). The results have been examined in terms of the concept of a true stress-strain-strain rate relationship. It has been shown that results for drawn fibres and extruded rods are compatible on this basis, and true stress-strain-strain rate surfaces can be defined. The significance of these results with regard to both tensile drawing and hydrostatic extrusion processes is considered. A preliminary discussion of the rate dependence is also presented.