Structural Design And Optimization Of A Rubber-type Torsional Vibration Damper

The rubber-type torsional vibration damper is one of the important parts of engine.The rationality of the structure design of the rubber-type torsional vibration damper directly affects its working condition,production efficiency and production cost.In order to enhance the assembly performance and service performance of the damper,reduce fault rate and rejection rate,with a rubber-type torsional vibration damper structure design as the research object,according to the relevant theories,design and optimization of its structure,the main research contents include:Based on the design of the cavity structure of the original rubber-type torsional vibration damper,the straight cylindrical structure damper is designed by the traditional design method.In view of the design of the cavity structure of the damper,the contradiction between improving assembly performance and service performance,a solution to the cavity structure of a damper based on TRIZ theory is proposed,and a curved and circular structure damper is designed.The original torsional vibration damper is modeled by ABAQUS simulation method,and its assembly performance and service performance index are analyzed.At the same time,based on the hyperelastic rubber material mechanics of materials testing,samples of data processing,using a variety of rubber hyperelastic constitutive model of materials,and the constitutive model parameters of fitting goodness of choice.According to the theory of friction contact,the friction coefficient between metal and rubber ring is tested by comparing the test and simulation.Comparison between performance test and simulation analysis,the performance tests of press-in forces,slip torque and pushing-out forces are carried out on the original structure samples,and the performance of the structure was analyzed by simulation method.The results of test and simulation were compared,and the validity of the simulation method was verified.At the same time,the phenomenon of pseudo strain energy in the simulation is analyzed,the pseudo strain energy and total energy are compared,and the accuracy of the performance simulation is verified.The simulation method is used to analyze the performance peak of the damper in the process of press in,torsion and pushing out,The press-in forces,slip torque and pushing-out forces performance indexes of straight cylinder structure,arc curve structure and original structure are compared.The assembly performance and service performance index of several kinds of dampers are analyzed by means of data,and the optimum design scheme of comprehensive performance is proposed.Using the method of orthogonal experiment,the curve of arc structure parameters are optimized,the influence factors of cavity structure are rubber ring compression ratio,linear section ratio and minimum clearance,and the multi factor orthogonal test is adopted.The matrix analysis method is used to evaluate the test results.Finally,the optimal torsional damper structure of press-in forces,slip torque and pushing-out forces is designed.