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中文摘要：
复合固体推进剂的流变特性可用Wiechert体描述，其拉伸蠕变柔量只需求解一个一元n次方程就可得到．此方程的根被证实全是实根，且两两互异．算例验证表明了文中给出的蠕变柔量具有很高的精度，但计算醚小，程序实现简单、此方法还可以用于求解固体推进剂的体积蠕变柔量．
英文摘要：
The rheological property of composite solid propellant can be described by the Wiechert model, and its tensile creep compliance can be obtained only by solving a polynomial equation of the n-th degree about one unknown. It is proved that all the roots of the equation are real and mutually distinct. The obtained tensile creep compliance is with very high precise, although the program is simply realized with little calculation. Furthermore, this method can be used in solving the volume creep compliance of composite solid propellant.
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