中文摘要：

该文分析了超声速气动控制舵面在瞬态气动载荷作用下的位移及应力的时域变化。采用基于Volterra级数的气动弹性系统降阶模型快速获得了舵面的颤振边界。通过CFD/CSD耦合计算,确定了舵面在颤振速度下的瞬态气动载荷,并利用参数空间下的有限元四结点方法将每一时刻的气动载荷插值并施加到结构结点上,进行了瞬态响应分析,得到了舵面在瞬态载荷作用下的动应力。计算结果表明：由于气动载荷的变化以及结构快速振动引起的惯性力的作用,轴根部最大弯曲应力是定常气动载荷作用下应力的3倍左右。

英文摘要：

The main goal of this paper is to analyze the displacement and stress of a supersonic fin on a transient dynamic load.The reduced order mode（ROM） based on Volterra Series is presented to calculate the flutter boundary,and CFD/CSD coupling is used to calculate the transient aerodynamic load.Transfer the load to a structural model by using FEFN（finite element four nodes） in a parametric space for a transient response analysis.The results show that due to the aerodynamic load and the inertia force through vibration,the maximum bending stress on the root of the axis is about 3 times than the stress induced by static aerodynamic loads.