1、 Direct harm of vibration to electronic equipment
During the Second World War, the U.S. Air Force scrapped about 21000 aircraft due to flight failure, which was 1.5 times more than that of those shot down; 60% of the electronic equipment on the aircraft could not continue to be used after being transported to the Far East. These facts cause the US military to attach great importance to the environmental adaptability and reliability, especially the environmental adaptability of vibration and impact. To measure the quality of electronic equipment, in addition to measuring the performance index of the equipment itself, it must also strictly meet the environmental adaptability index. Vibration does great harm to electronic equipment, which is mainly manifested in poor contact of electronic product components caused by vibration, abnormal operation of indicator light, degradation of moisture-proof sealing performance, cracks in formed components, Solder and solder joints are disconnected, vibration causes electrostatic breakdown and so on. Although the airborne electronic equipment itself is developed according to the national military standard, most of the electronic airborne equipment and cabinets do not have their own damping system, so long-term placement in the harsh vibration environment will cause fatigue damage to electronic components. In order to solve the above problems, further improve the control accuracy, reduce the structure weight, reduce the volume, so it is necessary to control their vibration. It is an effective measure to increase the structural damping.
Damping damping technology is to reduce or eliminate mechanical vibration and noise caused by vibration by increasing structural damping (material damping, structural damping, contact damping), and to improve the dynamic stability of mechanical structure. It includes the development of damping material, the treatment of damping structure and the correct and reasonable application. There are two main measures for the anti vibration design of airborne electronic equipment: the design of strengthening cabinet and the adoption of damping and buffering system. Generally speaking, there are many electronic components and equipment, and the investment of each equipment reinforcement is too large, and the reinforcement technology itself has certain limitations, so the shock absorption system is generally used for anti-seismic. The electronic equipment shall be placed inside the cabinet, and the cabinet and the fixed surface of the engine room shall be effectively damped. By adding damping vibration isolation to the cabinet as a whole, the natural frequency of the damping damper and cabinet shall be controlled as far as possible away from the natural frequency of the cabinet itself.
2、 Shockproof of digital computer room cabinet
1. Compared with the infrastructure of digital machine room cabinet, such as anti vibration, cabinet frame, etc., the quotation of efficiency device, network and storage equipment is obviously higher, and the data is the priceless industrial core for vehicles, aircraft and ships. For the integrated cabinet, the degree of informatization is getting higher and higher, the data center planning is getting larger and larger, and the power density is getting higher and higher, which puts forward a high demand for the seismic resistance of the data center cabinet. In such an information society, data security is a very core, cabinet damping seismic is a factor that has to be considered.

Electronic equipment cabinet bracket and metal shell are attached with damping reinforcement

2. Anti seismic effect of electronic equipment cabinet: when reinforcing the equipment shell, we can choose to stick a layer of damping restriction damper on the stainless steel rolling plate of the cabinet. This material flexibility and shock absorption performance can ensure the reduction of vibration energy consumption of the cabinet. The cabinet bracket adopts elastic damping frame to form the shock absorption structure, so as to ensure that our cabinet is anti-seismic Shock resistance. In high-speed train operation, the higher the speed change, the greater the vibration amplitude. A special damping damping damping platform is designed and installed under the cabinet to reduce the transmission of vibration energy wave and the acceleration, so as to achieve the purpose of earthquake resistance and earthquake resistance. Compared with the traditional solid-state damping spring, it has double effects of vibration reduction and noise reduction, and effectively reduces the transmission rate of vibration energy wave. The noise reduction and shock absorption effect is more obvious and effective.