The application of rubber shock absorbers is very wide, with long-lasting high elasticity, good vibration damping, shock isolation and sound insulation performance. The rubber shock absorber is used between the machine part and the base part to absorb shock.
As an important type of damping component, rubber shock absorbers have been widely used in various machinery, automobiles, railway locomotives, water vehicles, airplanes and other aircraft. It can be said that rubber shock absorbers are needed wherever shock absorption and isolation are needed. The reason why rubber shock absorbers are so widely used is that they effectively utilize the following characteristics of rubber:
1) Rubber has high elasticity and viscoelasticity;
2) Compared with steel materials, the elastic deformation of rubber is large, and the elastic modulus is small;
3) The impact stiffness of rubber is greater than the dynamic stiffness, and the dynamic stiffness is greater than the static stiffness, which is beneficial to reduce impact deformation and dynamic deformation;
4) The stress-strain curve is an elliptical hysteresis line, and its area is equal to the vibration energy (damping) converted into heat in each vibration cycle, which can be adjusted by formula design;
5) Rubber is an incompressible material (Poisson's ratio is 0.5);
6) The shape of the rubber can be freely selected, and the hardness can be adjusted by formula design, which can meet the requirements of stiffness and strength in different directions.
