纸浆模塑材料本构方程拟合的改进  

Modification of Constitutive Equation Fitting of Moulded Pulp Material

作　　者：计宏伟[1] 王怀文[1] 郭玉花[1] 

机构地区：[1]天津商业大学,天津300134

出　　处：《包装工程》2009年第10期11-13,共3页Packaging Engineering

基　　金：天津市自然科学基金重点项目(08JCZDJC16100)

摘　　要：对描述纸浆模塑材料经验型本构关系的拟合方程进行了改进,给出一种新的本构关系拟合方程,根据不同密度的材料在不同加载速率下的压缩实验数据,对该模型中的相关待定系数进行了拟合。验证结果表明,提出的本构方程能较好地反映材料的应力-应变关系。An experience based constitutive equation of moulded pulp materials was modified, and a new constitutive equation was proposed. Coefficients in the equation were fitted by the compression experimental data of the material with different density under different loading speed. Comparison between the experimental results and calculated results was carried out, which indicated that the modified constitutive e quation can fit the stress strain curves of moulded pulp material well.

关 键 词：纸浆模塑 压缩应力-应变曲线 本构方程拟合 

分 类 号：TB484.1[一般工业技术—包装工程] TB487