人造地球卫星所经历的工作环境,包括发射环境、轨道运行以及再入大气层。在发射环境中,卫星受到很大的加速度过载和强烈的振动。因此,要求结构材料具有足够的强度。为了避免卫星和运载系统产生共振,应使二者的固有频率相差较大,要求卫星结构具有一定的刚度。由于人造卫星大多采用薄壁式结构,这就要求它的结构材料具有较高的弹性模量。为了尽量减小结构的动态响应,采用高阻尼材料更为有利。这些方面 The working environment experienced by man-made earth satellites includes launch environment, orbital operation and re-entry. In the launch environment, satellites are subject to large acceleration overloads and strong vibrations. Therefore, the structural material is required to have sufficient strength. In order to avoid resonance between the satellite and the carrier system, the natural frequency of the two should be greatly different and the satellite structure must have certain rigidity. Since artificial satellites mostly adopt a thin-walled structure, this requires that its structural materials have a high elastic modulus. In order to minimize the dynamic response of the structure, it is more advantageous to use a high damping material. These aspects