Based on an effective nonlinear viscoelastic model, the differential constitutive equation and strain-rate equation of solid composite propellants are induced.

根据一个有效的非线性粘弹模型，导出复合固体推进剂微分形式本构方程和应变速率关系式。

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By scientific computing with the constitutive equation, the plate′s stress-strain curves at different strain rate are obtained.

金属材料在不同应变率下的真实应力应变曲线是汽车碰撞模拟的一个关键。

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Analysis of the results indicates that by the constitutive equation the strain rate de-pendence and thermo-softening effect of TNT are described.

根据试验结果拟合了TNT材料随着加载速率和环境温度变化的本构关系，分析表明该本构关系可以很好地描述材料的应变率、温度效应。

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