Non-Linear Finite Element Analysis Of Damped Rubber Bushes

Rubber bush mounts are the rubber components bonded with steels or other metals each other. They have great applications in automibles, bridges, buildings and so on because rubber bush mounts can absorb energy in terms of vibration damping effects. Their researchs and devolpments have been cared about widely. However, theoretical accouts of rubber material are very difficult because of the complex characteristics of its mechanical behaviors. So it has influence in the rubber bush mountings'design and applications to a certain content. Happily, the nonlinear problems can be settled with the devolpments of computer and technique of finite element method.Non-linear finite element analysis of classic testpiece of rubber-steel bimaterials. An non-linear finite element analysis of double shear testpiece of rubber-steel bimaterials has been finished. For the testpiece without crack, the stiffness of the testpiece and the stress distributions of the interface have been given. The stiffness and stesses are showed. Rubber components often appear interface failure due to the actions of mechanical loads and the influences of enviorment. Hence, in this paper the interface failure mechanism has been studied by means of finite element method and fracture machinics. The numerical results of testpieces deformation with crack are in close agreement with experimental values. Calculations of tearing energy of different crack depths and different loads have been done for double shear testpiece with interface cracks. At last, the relationship between tearing energy and crack depth has been given ,so has the relationship between tearing energy and load.Non-linear elastic behavior of rubber layer bonded between two rigid spheres. Non-linear finite element analysis of rubber layer bonded between two rigid spheres has been performed for rubber's characteristic of large deflection and nearly incompressibility. The relationships between stiffness and deformation have been gained when large tensile deformations are imposed. The effects of different Poisson's ratios of rubber matericals on the stiffness and stresses of rubber layer have...