Damping technology is widely used in navigation and aerospace. It is an important research how to achieve weight reduction and efficiency enhancement with damping layer. Reasonable local damping design is an effective method. Based on modal analysis, Ansys software is used as the simulation platform to design a local damping laying based on modal vibration mode. In order to verify the designed performance of local damping weight reduction, a beam with fixed support at both ends was analyzed, and the damping design of local damping and global damping was carried out. The simulation results show that the designed local damping can achieve good damping effect under the condition of reducing the weight of the damping layer, and it has reference value for engineering applications.
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