Design Of Disc Brake Structure Based On GMM And Analysis Of Multi-field Coupling

Brake is an important component of the car brake system,and its excellent performance is an important guarantee for people’s travel safety.Compared with other brakes,disc brakes are the most widely used brakes in domestic cars due to their stable braking performance,small size and quality,and easy maintenance.However,the existing disc brakes have disadvantages such as complicated actuator,hysteresis hysteresis,large size and quality,and large vibration noise.Based on this,this paper uses Giant Magnetostrictive Material(GMM)to have the characteristics of large output force,high displacement resolution and fast response speed,and designs a kind of super magnetostrictive material as the driving source instead of the traditional one.A new disc brake that is pneumatically or hydraulically driven.It can not only replace the original complex structure,but also hope to significantly improve the response time during braking.While improving the active safety of the car,it also meets the requirements of lightweight and environmental protection of the car,providing a new design for the new disc brake.Ideas.The paper takes the traditional hydraulically driven disc brake as the entry point.Through the literature reading,the basic characteristics of magnetostrictive materials,the application of magnetostrictive materials and the research status of magnetostrictive actuators at home and abroad are studied.Combined with the working characteristics of disc brakes,A magnetostrictive brake is designed to meet the emergency braking conditions.The parameter design of the friction pair and the overall design of the driver are completed.The main parameters are designed.The CATIA overall model is established and the GMM-based disc brake is introduced.The principle of braking.The thermo-mechanical coupling theory of the system is established.The finite element simulation software COMSOL Multipysics is used to simulate the brake,and the specific process and result analysis of the finite element solution are given.The simulation results show that the designed magnetostrictive brake can better meet the braking performance requirements under emergency braking conditions.In order to further improve the performance of the brake,an improved algorithm model of the magnetostrictive brake braking characteristics was established.The genetic algorithm was used to improve the relevant design parameters,and the overall performance of the magnetostrictive brake was improved.