【摘要】 为减小某卫星天线支承筒的振动,根据阻尼减振原理,采用约束阻尼层方法进行减振处理。以ZN-1丁基橡胶为粘性阻尼材料,T700S层合板为约束层,在约束层厚0.4 mm,铺层数为4的条件下,设计了三种不同铺层角的减振方案。有限元计算结果表明,在天线支承筒上附加约束阻尼层可明显降低支承筒指定点处的频率响应。在给定条件下,给出的三种方案均满足工程要求,其中以铺层角45°/-45°/0°/90°方案的效果最佳。更多还原

【Abstract】 To reduce the vibration response of antenna support shell for some satellite,the restricted damping layer was applied according to the theory of vibration dumping in this paper.The ZN-1 butyl rubber was used as viscous damping material and the T700S laminating plate was utilized as the restricted layer.The three schemes were given when the thickness of the restricted layer was 0.4 mm and the number of laminating layers was 4.The computation results of the finite element method showed that the restricted damping layer added on the antenna support shell could reduce its frequency response greatly.The three schemes met the requirement in engineering under the given conditions,and the layer angle was 45°/-45°/0°/90° was the best one.更多还原