The Finite Element Numerical Simulation Research Of Strength And Failure For The Metal And Rubber Components

Metal rubber vulcanization bonding composite system has been widely used in many industrial fields,such as mechanical engineering,building structure,ship and rail transportation,elastic element bonding etc.Because the rubber and metal is the physical properties and chemical structure of different heterogeneous materials greatly,while the adhesive is between metal and rubber good interfacial transition layer material,and adhesive strength directly affects the strength and life of adhesive structure.Therefore,it is of great theoretical significance and engineering value to study the adhesive strength and failure modes of adhesive and glued interfaces.Centering on the failure of bond strength between metal and rubber interface,this paper studies the selection of cohesive force model,bond failure test,comparison and analysis of finite element numerical simulation results of equal size model,and optimization of parameters.The main research contents and results are as follows:1.The theory of failure theory? adhesive bonding technology? bonding and introduces the research progress of domestic and foreign theoretical simulation of finite element finite element modeling of metal rubber and metal rubber adhesive failure numerical.On the basis of comprehensive analysis of the literature,the key problems in the field of metal rubber bonding are expounded,and the research work in this paper is pointed out;2.The bonding strength and bonding failure theory and the bonding technology of metal rubber are introduced.The epoxy resin adhesive is used instead of the phenolic resin adhesive to simulate the bonding between metal rubber components.The cohesive force model theory based on elastic-plastic fracture mechanics is introduced,and the bilinear tension displacement rule is given,which provides a theoretical basis for the subsequent finite element numerical simulation;3.The adhesion of epoxy resin adhesive specimen tensile strength and shear strength test,the results showed that the tensile strength and shear strength curve by elastic and plastic hardening and three stages of failure,and the available bilinear equations approximate simulation of tensile strength and shear strength curve;4.With zero thickness cohesive element simulation between metal and adhesivetensile,shear bond strength and damage mode,results show that the tensile and shear adhesive bonding under different shear stress distribution,in the case when the load is increased along the length of bonding shear stress distribution on both sides to the middle of the largest maximum evolution trend.Simulation research on the numerical results of the theory and calculation applied to the rubber ball hinge.The results show that the failure mode under tensile load of the rubber bushing is mainly shear adhesive layer between the rubber and metal failure.