航天器火工冲击源力函数模拟分析

为对航天器火工冲击响应进行预示分析，使用显式有限元法对冲击源力函数进行模拟。以太阳电池阵解锁为背景，建立合理的有限元模型，分析多种简单脉冲函数及其组合函数在航天器上的冲击响应规律。通过与试验实测数据对比分析，使用简单脉冲函数的叠加，得到符合试验结果的冲击源脉冲函数，使冲击环境预示结果与实测数据一致。文章所提供的冲击源载荷拟合方法无须对复杂的火工品装置建模，可为后续冲击响应分析工作奠定基础。

Simulation of pyroshock load force function on spacecraft

To predict the pyroshock environment of spacecraft, an explicit FEM method is used to simulate the load force function. To study the deployment of the solar array, a model is established to analyze the pyroshock characteristics of different pulse functions loading on the spacecraft. Comparison with the ground test data shows that a reasonable load force function can be obtained by the superposition of several simple pulsed functions, with a consistent prediction result as compared with the ground test data. The paper proposes a method for determining the load force function of explosive devices without complicated modelling of the pyrotechnics, which may serve as a basis for the subsequent prediction of the pyroshock environment of spacecraft.