Research On Load For FEM Simulation Technology And Application In The Development Low-voltage Circuit Breaker

FEM(finite element method) simulation play an important role in product design. FEM one of the key virtual simulation technology has been becoming the research focus in the world. Based on the FEM simulation technology, this paper do research in the method for asymmetric distributed load, and do the quadratic exploitation on ANSYS. Finally, give out the examples which have been applied in the enterprise.In the first chapter, the paper introduces the condition of FEM simulation technology, analyses the origin and development of product simulation technology, and then introduce the home and overseas simulation technology of low-voltage circuit breaker, and the application of FEM technology. Finally, the author points out the paper's research content and structure.In the second chapter, this paper analysis the technology and process of the low-voltage circuit breaker FEM simulation. Then do research on the FEM prepositive processor, FEM solution and FEM postposition processor with the low-voltage circuit breaker.In the third chapter, loading plays a very important roles to the entire FEM analysis. And it directly affects the succedent calculation of solution and display of result. The load that the object falls under is always face load that distribute uniformity, while doing the FEM analysis, in order to simulate the face load better, advance the simulation precision of FEM, improve the efficiency and quality of FEM analyses, the method for dispersion to load on nodes bases on the eigenfunction distribute of FEM was put forward. The load on the circle face can be calculated automatically, then the nodes on the circle face can dispersion to be loaded after the eigenfunction and composition of forces of distribute load has been presented. The FEM analysis of face load that distribute uniformity can be implemented faster being using this method, and it has been proved that the method is steady and credible after the experimentation and it can improve the efficiency and quality of FEM analyses availably.In the forth chapter, the load that the object falls under is always face load that distribute uniformity, while doing the FEM analysis, in order to simulate the face load better, advance the simulation precision of FEM, improve the efficiency and quality of FEM analyses, the method for asymmetric distributed loads on unrestricted curving areas bases on the eigenfunction distribute of FEM was put forward. The load on the grids of unrestricted curving areas can be calculated automatically according to the eigenfunction and the figure of unrestricted curving areas. The FEM analysis of face load that distribute uniformity can be implemented faster being using this method, and it has been proved that the method is steady and credible after the experimentation and it can improve the efficiency and quality of FEM analyses availably.In the fifth chapter, this paper introduce the exploitation environment and function structure of "Low-Voltage Circuit Breaker FEM Simulation System", then and do the quadratic exploitation on ANSYS. Finally, give out the examples which have been applied in the enterprise.In the last chapter, summarizes the contents and the achievements of this paper, then pointed out the further research direction.