HTPB复合固体推进剂本构方程

On Constitutive Equation of HTPB Composite Solid Propellant

本文将Schapery非线性粘弹本构模型和Perzyna非线性粘塑本构模型组合建立HTPB复合固体推进剂非线性粘弹塑性本构方程。根据方程特点利用蠕变/恢复实验和Levenberg-Marquar优化原理确定模型的材料参数,并用单轴拉伸试验验证了该方程。

By adopting the Schapery＇s nonlinear viscoelastic model combined with Perzyna＇s viscoplastic model,a nonlinear viscoelastic constitutive equation of HTPB composite solid propellant is given. Acording to the charactoristics of the eqution,material parameters of the model is determined by using creep/recovery experiments and the Levenberg-Marquar optimality principle,and the eqution is supported by a uniaxial tension experiment.