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采用Schapery蠕变型非线性粘弹性本构模型并用M C方法 ,分析蠕变实验数据 ,研究了HTPB复合固体推进剂非线性本构关系。结果表明 ,该方法可以减少加卸载时数据波动的影响 ,降低参数拟合对实验条件的要求。Schapery非线性模型较好地反映了HTPB复合固体推进剂的力学性能 ,可以用于固体推进剂的力学分析
The creep nonlinear viscoelastic constitutive model of Schapery was used and the creep experimental data were analyzed by M C method. The nonlinear constitutive relations of HTPB composite solid propellant were studied. The results show that this method can reduce the influence of data fluctuation during loading and unloading, and reduce the requirements of parameter fitting for experimental conditions. Schapery nonlinear model better reflects the mechanical properties of HTPB composite solid propellant can be used for mechanical analysis of solid propellants