Study on mechanical properties of rubber bushings for track pins of high-speed tracked vehicle
For the hyperelastic behavior of rubber bushing material,uniaxial tensile experiment is designed to obtain the mechanical property data of rubber bushing material.Four kinds of intrinsic models commonly used to describe the hyperelasticity of rubber material are selected,and the best fitting effect of the 3rd-order Ogden principal model is obtained based on ABAQUS.Designed rubber bushing compression experiments and simulated compression experiments to test the reasonableness of the intrinsic model.The finite element model of two track shoes connections with pin and rubber bushing in the connection structure is established.Combined with the actual installation characteristics of rubber bushings,the rubber bushings finite element model is radial pre-compressed.Then,the tensile and torsion simulation of the track plate is completed.The simulation data are processed to obtain the mechanical properties of the rubber bushings.The mechanical properties of track pin rubber bushing joint after pre-compression were investigated by a combination of experiment and simulation.The rubber bushing tensile stiffness 50 000 N/m and torsional stiffness 18 600 N·mm/(°).The results of the study lay the foundation for the study of the dynamic performance of the travelling system of high-speed tracked vehicles.
rubber bushinghyperelastic principal modelfinite element calculationprecompressionmechanical properties
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