卫星液体燃料与结构耦合振动分析

根据流体域控制方程、结构动力学方程和液体与固体接触界面的条件，建立了液体燃料与卫星结构耦合振动有限元方程，并举出一些算例。根据算例结果讨论了对带有大量液体燃料卫星的液体燃料和结构耦合振动问题以及在卫星研制阶段进行耦合振动分析的重要性。

COUPLED VIBRATION ANALYSIS OF LIQUID COMBUSTIBLE AND STRUCTURE IN SATELLITE

his paper presents the coupled vibration finite element equations ofliquid combustible and structure,according to the control equations in fluid field,thestructure dynamics equations and the conditions of liquid and structure interface.Some examples are given. According to the results of calculation,the coupled vibration problem of liquid combustible and structure in satellites with large quantities ofliquid combustible and the importance of coupled vibration analysis of liquid combustible and structure during the development stage of satellite are discussed.