Research On Failure Mechanisms For Double-Acting Electromagnetic Clutch Based With Electromagnetic-Thermoelastic Coupling Theory

Electromagnetic clutch is a very common shaft drive components which is widely used to every field of the industry in mechanical products. With the discovery of third generation of rare earth permanent magnet materials particularly Nd-Fe-B permanent magnet materials, the research and application of permanent magnet-electromagnetic clutch getting rapid development. Double-acting electromagnetic clutch is based on the structure of permanent magnets-electromagnetic, in order to deal with some occasions that mechanical devices require two-way transmission of torque for further evolved, making the machine more compact and dexterity. Due to fewer basic research of double acting electromagnetic clutch in our country, failed to grasp some of its key technologies. In practical applications, double acting electromagnetic appears separate incompletely, frequent fault, short life and other defects.Due to based on the structure of electromagnetic-permanent magnet,double-acting electromagnetic clutch is more complex compared with the common electromagnetic clutch structure.Many causes for its failure and the various factors affecting each other, it is necessary to research on simulation and analysis of double electromagnetic clutch from multi-disciplinary and multi-angle.This dissertation describes the working principle and performance characteristics of the double double-acting electromagnetic clutch, put forward the analytical methods of double-acting electromagnetic clutch failure mechanism when it is used and applied. Using Maxwell software to analysis the electromagnetic force, eddy current induction heat and other important factors. Relying Workbench platform and making the results of electromagnetic analysis coupled to the temperature field analysis module to obtain the temperature distribution of the clutch friction-II. While use the results of temperature analysis obtained as a known load with other mechanical loads to do analysis and simulate for the parts of friction-II,to get vice driven disc and friction plate thermal stress distribution in the mechanical analysis module. Finally, the static analysis of center axis is necessary.Put forward the solution for residual magnetism, heat distortion, central axis deformation and other double-acting electromagnetic clutch failure issues. Research for electromagnetic clutch with electromagnetic-thermoelastic coupling coupling method is more accurate and comprehensive than univariate analysis. It can further improve and summarize the basic theory and method for solving the problems appear in permanent magnet-electromagnetic mechanical, which also will promote the permanent magnet technology used in other application areas.