In the weapon industry, the vibration of the transmission part of the military vehicle (engine, gearbox, gearbox) is a complex vibration with a wide frequency range. The application of high-performance damping and damping wear-resistant surface cladding material technology greatly reduces the vibration and noise generated by the transmission part of the heavy combat vehicle. 

The vehicle is the main military equipment of the future mechanized forces. In the future war, it will To undertake extremely important combat tasks. In order to give full play to the combat effectiveness of military vehicle weapon equipment, it is required that the crew of military vehicle must keep energetic and responsive in a long combat stage, and must create a relatively comfortable living and operating space for the crew of military vehicle. At present, the internal noise pollution of military vehicles produced and equipped in China is serious. 

The measurement results show that the maximum noise level of tracked vehicles can reach 120dB, and the noise level increases with the increase of vehicle speed. The harm of the internal noise of military vehicles must be paid great attention to, and great efforts must be made to solve the problem of reducing the internal noise of military vehicles, which is of great significance to protect the combatants, improve the combat effectiveness, and give full play to the combat effectiveness of weapons and equipment. The vibration of engine is the main noise source in armored vehicles. Through the analysis of the vibration and noise signals in the vehicle by frequency analysis and coherence analysis, the characteristic frequencies of the vibration and noise reduction characteristics in the military vehicle are obtained. The results show that at last, the structural noise of the military vehicle can be effectively reduced by using pcmape damping reinforcing plate, the design of relevant improvement measures and the damping sound absorption structure.