Based on an effective nonlinear viscoelastic model, the differential constitutive equation and strain-rateequation 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。
2
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。
3
For brittle material testing, the governing equation of input waveform for attaining constant strain-rate loading is given.