摘要
在准静态等速拉伸实验得出的纸浆模塑材料应力-应变曲线的基础上,分析了纸浆模塑材料在变形过程中存在的初始弹性阶段、黏塑性阶段和断裂破坏阶段,建立了表征纸浆模塑材料弹黏塑性的流变模型。2种不同纸浆模塑材料的实验表明,实验结果与理论模型比较吻合。
Based on the analysis of a curve of stress versus strain from the constant rate quasi-static experiment, it was found that the deformation of molded pulp material is divided three phases： elastic deformation period, viscoplastic deformation period and fracture period. Then a general rheological model of nonlinear elastic viscoplasticity was developed. The experiment results of two different molded pulp materials showed that the theoretical model is well agreed with the test results.
出处
《中国造纸学报》
EI
CAS
CSCD
2008年第2期91-95,共5页
Transactions of China Pulp and Paper
基金
印刷包装材料与技术北京市重点实验室开放研究课题基金(KF060403)资助项目
关键词
纸浆模塑
弹黏塑性
流变模型
molded pulp
elastic viscoplasticity
rheological model
