To improve the dynamics performance of a constrained damping cylindrical shell, topology optimization of the constrained damping cylindrical shell for the maximized modal damping coefficient was studied. According to the first 3 orders modes,a novel topological optimization model was proposed and analyzed,where the volume was taken as the constraint function and the function of the modal damping coefficient as the target function.The reasonable topology configuration was obtained for the damping structure.The results show that this method can be applied to solve the optimization

problem of a constrained damping cylindrical shell with the damping materials volume constrained.Numerical simulations were performed to verify the effectiveness of the presented method.

为了改善约束阻尼柱壳结构的动力学性能,基于拓扑优化思想，提出了一种约束阻尼层布局设计方法。结合结构的前三阶模态，建立了多目标优化的数学模型，以约束层和阻尼层铺设体积为约束条件,以模态阻尼比函数为目标,通过数值方法得到了约束阻尼材料的最优分布构形。最后，利用柱壳和板壳复合结构的仿真验证了方法的有效性。