Numerical Simulation Of Sound Insulation Performance Of Magnetorheological Rubber Material

Rubber material because of its good noise reduction features,widely used in construction,industrial,military and other fields,and achieved good results.However traditional rubber material have good sound insulation effect only in a range of sound frequencies,cannot have the effect of the broadband noise reduction.Therefore,many scholars do widely analyzed in order to set good sound insulation effect of sound insulation material in a wide frequency.Magnetorheological elastomers(MRE)is intelligent materials that it can change its mechanical properties through additional magnetic field.Magnetorheological rubber material can achieve increase its best sound insulation effect frequency range by changing with magnetic field strength,to improve the sound insulation properties.This paper analysis sound insulation properties of magnetorheological rubber,The main research contents are as follows:1.We use theory and method of the complex network to study the acoustic properties of rubber material under no magnetic field,respectively to simulate the pore internal for vacuum under different porosity of sound insulation performance of rubber material by COMSOL,and analyses the connection between the sound insulation quantity of the material and the three statistical parameter(Average degree,Average clustering coefficient,Average shortest path length)of complex network topology.2.The vacuum setting of air within the pores,analyzing its the sound insulation performance of different porosity of rubber material by COMSOL,and analyzes its the connection between the sound insulation quantity of the material and the three statistical parameter(Average degree,Average clustering coefficient,Average shortest path length)of complex network topology.3.Sets the pore to magnetic powder particles(Hydroxyl iron powder),based on the homogenization method,calculated the equivalent mean stress of the material under different magnetic flux density and under microdeformation condition by COMSOL,calculated the equivalent elastic modulus of the material under different magnetic flux density,analysis the sound insulation properties of the material under the magnetic flux density.