菜籽与菜籽仁的非线性粘弹塑性本构模型

Nonlinear Viscous-elastic-plasticity Constitutive Model of Rapeseed and Rapeseed Kernel

在菜籽与菜籽仁流变试验的基础上,采用模型理论与经验模型相结合的方法建立菜籽与菜籽仁非线性粘弹塑性本构模型,并运用改进模拟退火计算方法对模型参数反演。结果表明,非线性粘弹塑本构模型能较好地模拟菜籽与菜籽仁流变特性。

A nonlinear viscous-elastic-plasticity constitutive model for rapeseed and rapeseed kernel was developed on the basis of the theological test. The parameter inverse of the constitutive model was carried out using the improved simulation annealing. The maximum relative deviation between the experimental and predicted values of the strain is below 8.8M, which indicates that the nonlinear viscous-elastic-plasticity constitutive model can simulate theological behaviors of rapeseed and rapeseed kernel well.