高黏度新型功能材料黏性系数的参数辨识

Parameter Identification of Viscosity Coefficient for High Viscosity New Type Function Composite

高黏度氧化硅复合材料是目前国内综合性能较好的一种新型功能材料,高温黏性系数是其重要的性能表征参数,本文利用烧蚀求解的反问题原理,应用灵敏度法,推导出了确定黏性系数参数的灵敏度方程,并给出这种高黏度功能材料的黏性系数,利用计算的黏性系数得到的烧蚀速率的计算结果与试验结果是相符的。

Recently, the high viscosity SiO2 matrix composite is a good function material for its synthetic property, and the high temperature viscosity coefficient is an important parameter for its ablation performance. The sensitive equations of parameters for viscosity coefficient are presented by inverse problem method. The calculated ablation velocity by using the viscosity coefficient of parameters identification method is consistent with that of the test results.