What Material Are Vibration Damping Pads Made Of?
2 Answers
Vibration damping pads are made of rubber. Below is relevant information about vibration damping pads: 1. Function: When a car engine operates, vibrations are generated due to the reciprocating motion of pistons, cylinder combustion, and moving parts. If the engine is directly connected to the chassis, the chassis will also vibrate, affecting the car's handling and comfort. Therefore, a vibration damping pad is installed between the car engine and the chassis to minimize the transmission of engine vibrations to the chassis. The working principle involves using the elastic deformation of the damping pad to absorb the vibrations produced by the engine. 2. Characteristics: Rubber vibration damping pads are characterized by both high elasticity and high viscosity. The elasticity of rubber is generated by changes in the coiled molecular conformation, while interactions between rubber molecules hinder the movement of molecular chains, exhibiting viscous damping characteristics. As a result, stress and strain are often in an unbalanced state.
Last time I changed tires, I specifically asked the master mechanic. There are two common types of vibration dampening pads: rubber and polyurethane. Factory cars mostly use rubber material because it's cheap and soft, but it tends to crack and age easily, possibly deforming after 3-5 years. The modification scene now favors polyurethane pads, like the high-density foam used in motorcycle helmet liners. They're stiff but extremely durable, reducing body sway over speed bumps by half. Some high-end cars even have hydraulic oil injected between layers, which basically prevents throttle vibrations from entering the cabin. When replacing them, make sure to check the model number clearly, as using the wrong material can affect chassis geometry.
