高密度聚乙烯结构发泡塑料拉伸本构关系的研究  

Research on Constitutive Relation of High-density Polyethylene Structural Foam Under Tensile

作　　者：饶聪超[1] 姜献峰[1] 李俊源[1] 杨德伟[1] 陈林林[1] 

机构地区：[1]浙江工业大学特种装备制造与先进加工技术教育部重点实验室,浙江杭州310014

出　　处：《中国塑料》2012年第7期66-69,共4页China Plastics

摘　　要：为了提高高密度聚乙烯(PE-HD)结构发泡工程的长期稳定性,在Sherwood-Frost模型的基础上,建立了包括应变率和密度的PE-HD结构发泡材料的本构关系,依据发泡塑料的拉伸应力-应变曲线,用数值方法拟合了该模型中的相关参数。验证结果表明,提出的本构方程能反映材料的应力-应变关系。In order to improve the long-term stability of high-density polyethylene （PE-HD） structural foaming engineering, the constitutive relation of PE-HD structural foam including strain rate and density was established on the basis of Sherwood-Frost model. Based on the tensile stress and strain curve of plastic foams, the related parameters were fitted via a numerical method. A comparison between the calculated and experimental values indicated that the proposed constitutive model may describe the stress-strain relationship of PE-HD.

关 键 词：高密度聚乙烯 结构发泡 拉伸 本构关系 参数 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]