As the well deserved king of land battle in the modern ground battlefield, tank can form an unstoppable situation in the front line, effectively support the infantry and destroy the solid defense lines and fortifications with its heavy armor, super powerful artillery and high-powered engine. It is an indispensable heavy fire mobile support platform for the army; however, such a weapon with many advantages also has some defects in use, especially the huge noise and vibration of the mechanical equipment itself, which cannot be overcome by the existing technology. Tank noise mainly comes from engine, suspension system and track, which is easy to be detected by acoustic sensor. So in the process of running the tank, the members of the vehicle group have to bear a lot of noise, and the working environment is relatively bad; the noise source comes from the engine and artillery; 

the internal operating environment of the modern tank is much better than that of the previous tank, which greatly improves the operating environment of the tank soldiers, and improves the combat ability, even though the level of tank automation and information technology is constantly improving, Moreover, the built-in air conditioner and air purifier ensure the comfort of the members, but it is undeniable that the tank crew must work in a certain noise, high temperature and suppressed environment. At present, the interior noise pollution of armored vehicles produced and equipped in our country is serious. The measurement results show that the maximum noise level of tracked armored vehicles can reach 120dB, and the noise level increases with the increase of vehicle speed. The harm of internal noise of armored vehicles must be paid great attention to, and great efforts must be made to solve the problem of reducing the internal noise of armored 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 signal in the vehicle by frequency analysis and coherence analysis, the characteristic frequency of the vibration isolation and noise reduction characteristics in the armored vehicle is obtained. 

The results show that the use of putsmier damping reinforcing plate and the design of damping absorption structure through the relevant measures to improve the tank structure can effectively reduce the structural noise of armored vehicles, such as the design of muffler, the introduction of damping and noise insulation materials Or devices, such as the use of hydro pneumatic suspension device shock, vibration, noise reduction; the use of rubber wheel and rubber pad mounted track and so on.