Related Experiment Video
Updated: Jul 26, 2025

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
Influence of rubber's viscoelasticity and damping on vertical dynamic stiffness of air spring
Yinghao Hu1, Jianhong Zhang2, Jiangqi Long3
1School of Mechanical Electrical Engineering, Wenzhou University, Wenzhou, 325035, China.
Abstract:
Using the diaphragm-type air spring as the research object. The ratio of the vertical stiffness change caused by compressed air to the total vertical stiffness change was calculated, and it was determined that the nonlinearity of air spring vertical stiffness was mainly caused by the deformation stiffness of the rubber airbag. The variation law of vertical dynamic stiffness of air spring was predicted by theory: due to the material's viscoelasticity, the vertical dynamic stiffness rises as the excitation frequency rises, and the vertical dynamic stiffness decreases with the increase of excitation amplitude due to the damping of the material. An air spring finite element analysis (FEA) and experiment were conducted. The results show that the vertical dynamic stiffness obtained through simulation and experiment is consistent with the theoretical prediction, when various factors such as material nonlinearity, element coupling, and stiffness value sensitivity were considered. This proves that the predicted vertical dynamic stiffness variation law is reliable. The vertical dynamic stiffness obtained from both simulation and experiment showed a strong correlation in numerical values, which verified the accuracy of the FEA model of air spring established in this paper.
Related Concept Videos
Euler's Formula to Columns: Problem Solving
The system comprises two vertical rigid bars, AB and BC,...
Dynamic Modulus of Elasticity of Concrete
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
Members Made of Elastoplastic Material
As the bending moment...
Types of Damping
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Residual Stresses in Bending

