The design concept of rubber bushings is to buffer and isolate vibrations and impacts through elastic deformation, while precisely controlling stiffness in multiple directions to achieve a balance between vehicle handling and ride comfort.
The core design principle lies in utilizing the superelasticity and high damping properties of rubber materials, combined with the vulcanization molding of a metal skeleton. This allows the bushing to withstand complex loads (such as longitudinal forces, lateral forces, and torsional moments) while effectively attenuating high-frequency vibrations and reducing noise (NVH performance). By adjusting the rubber hardness, geometry, skeleton structure, and internal flow channel design, independent control of stiffness in the axial, radial, and torsional directions can be achieved.
For example:
Conventional Rubber Bushings: By changing the rubber thickness, shape, and skeleton layout, the dynamic-to-static stiffness ratio is optimized to meet the performance requirements of different installation positions.
Hydraulic Bushings: Based on the traditional structure, a sealed chamber and hydraulic oil are introduced. Damping is generated by the fluid flow, maintaining a soft response in the initial stage and providing strong support in the final stage, achieving a "soft but not loose, firm but not bumpy" effect.
