FEA based Dissipation Energy and Temperature Distribution of Rubber Bushing

Rubber bushings used in the vehicle or aerospace can reduce the noise and vibration and absorb the shocks. The\ud heat accumulation in the rubber components is attributed to the nonlinear mechanical behavior of rubber and\ud leads to degeneration of mechanical properties. The viscoelastic damping is treated as the major mechanism of\ud dissipation energy, which is heat source of temperature rising in bushing. A finite element method is expanded\ud from elastic structure to viscoelastic structure and computes the dissipation energy distribution in the rubber\ud core. Based on that heat source, the temperature distribution of rubber bushing under radial harmonic excitation\ud has been calculated using finite volume method. The frequency and amplitude effect on dissipation energy and\ud temperature distribution are described. The radial dynamic testing is carried out and the temperature is recorded\ud using thermal imager to evaluate the simulation. As complement, the dynamic torsional testing is also carried\ud out explore the possible failure zone of rubber bushing under different types of loading