Performance Analysis And Optimization Of A New Friction Clutch

The new type of friction clutch of a military industrial enterprise is mainly used in missile launchers.The stability of its work directly affects the safety of the equipment.Entrusted by the enterprise,this project is urgently proposed for its inability to separate the main and followers in the process of power transmission in a timely or premature manner.The range of slip torque is unstable,and it is urgent to meet the work requirements that cannot be guaranteed.Based on this,this article mainly studies the following:(1)Based on the operating characteristics and vibration of the overload protector system,this article establishes its dynamic model and dynamic equations,and uses the multi-scale method to solve the dynamic equations and analyze the overload protector in different materials and different Speed and vibration characteristics and critical slip characteristics under different external excitation forces,and the corresponding frequency response curve is drawn.Based on the critical slip characteristic curve and amplitude-frequency characteristic curve,this paper uses the finite element analysis method to perform finite element analysis on the key components in the overload protector system,solve its maximum displacement and maximum Mises stress,and verify its strength and normal operation.The stiffness meets the design requirements;and the displacement of the disc spring and the critical slip pressure and penetration of the roller and friction disc in the slip state are obtained.Using the rotor dynamics analysis method,the rotor dynamics of the overload protector’s rotating shaft is analyzed to determine its first-order critical speed and Campbell diagram.The resonant speed of the overload protector is pointed out to effectively guide the design and actual working conditions.And through thermal analysis,the temperature transmission path of the roller and friction disc brake slip process of the overload protector and the critical temperature value under the slip state are determined,and suggestions for future design optimization and working environment are proposed.Then,a multi-body dynamics analysis method was used to simulate and solve a new type of friction clutch.The displacement,speed,acceleration,and maximum force in the working process were obtained,which is not only compared with the theoretical analysis described above,but also for the following Boundary conditions are provided by topology optimization and finite element simulation verification.(2)Using a multi-body dynamic analysis method to simulate and solve a new type of friction clutch,the displacement,speed,acceleration and maximum force during the work are obtained,which not only compares with the previous theoretical analysis,but also optimizes the topology below.And finite element simulation verification provides boundary conditions.(3)The dynamic model of the multi-body nonlinear concentrated mass parameter of thefriction clutch is established and solved.The vibration response time and frequency domain characteristics of the clutch under different working conditions are obtained.It is the main factor affecting the vibration amplitude of the clutch.At the same time,the relationship between clutch vibration performance and gear mesh stiffness is studied,and the reference optimization direction of the clutch is given.(4)Topological optimization method is used to perform topological optimization on the mounting support and friction disc of the overload protector,and the system is subjected to force analysis on the optimal model,and compared and analyzed with the original model to obtain the topology-optimized model in light weight At the same time,the light weight is also more uniform,which greatly saves costs and improves material utilization.At the same time,the gear train is optimized and analyzed.The research shows that reasonable increase of the overall rigidity and average rigidity of the gear,and the reduction of the stiffness as much as possible can effectively reduce the clutch vibration response,so that the clutch is in a relatively stable working state.Finally,multi-body dynamics and limited The meta-analysis method verifies the accuracy of the previous theoretical solutions and finite element analysis results,and shows whether the final optimized model can work stably.