The mechanical conditions of the cabinet mainly refer to the mechanical actions of centrifugal acceleration, impact and vibration under the conditions of different vehicles used in electronic equipment. The influence of mechanical conditions is mainly in the electrical parameters of electronic equipment components, changing electronic components, structural damage, deformation, fracture and failure.
1. Reduce the intensity of vibration source
For high-speed electronic equipment, in order to effectively ensure its dynamic balance, the damping capacity can be achieved by reducing the vibration of unbalanced position; For the shipborne antenna, its windward area can be optimized to reduce the size of the area, so as to reduce the wind load and vibration; Radar electronic equipment, rotation, etc. will rub and vibrate with the production bearings of relevant components. The effective buffer design needs to be equipped with precision bearings to reduce friction.
2. The damping design is carried out by eliminating the vibration of the damping body
When the excitation suppression effect produced by the vibration source body is not good or cannot be completed, the damping body can be specially designed to effectively complete the vibration elimination. If special equipment is installed with special devices in the spring shock absorber, it can effectively absorb and reduce the vibration interaction and the kinetic energy source generated by the shock absorber, and reduce the vibration intensity of the vibration source.
3. The damping effect can be achieved through the isolated suspension design, i.e. inserting a pad between the vibration and the damping source. It is necessary to ensure the corresponding softness. Such a vibration source will deform when it vibrates, so as to reduce the vibration intensity. The pad commonly used in electronic equipment is damping plate. And the specific implementation scheme, it is necessary to conduct mechanical analysis and clear physical mechanism analysis between various components, so as to adopt appropriate suspension methods. At the same time, each structural parameter and suspension performance calculation method and quantitative data are needed to determine the priority structural parameters.
In the design process, industrial designers should accumulate and apply their daily design experience. The essential core of electrical or mechanical equipment is mechanical function, and its appearance is a way to show people. In order to make the mechanical product style designed by mechanical equipment more distinctive, it is also necessary to carry out reasonable structural design between function and appearance.