Electromagnet magnetic field simulation method based on finite element analysis

Abstract

The invention discloses an electromagnet magnetic field simulation method based on a finite element analysis. The method comprises the first step of modeling an electromagnet in a three-dimensional modeling tool, the second step of determining the attributes of materials of all parts of an electromagnet model according to different regions of the electromagnet, the third step of carrying out mesh dividing on the regions of the electromagnet model through a quadrangle unit, the fourth step of loading the electric current density on a coil of the electromagnet, the fifth step of exerting magnetic force line parallel conditions on peripheral nodes of the electromagnet, the sixth step of simulating the electromagnet model in a simulation tool and solving the electromagnetic force of the electromagnet model, the seventh step of encrypting a grid, and carrying out simulation again until a grid extraneous solution is obtained, and the eighth step of comparing the result with the actual experiment data to determine the validity the simulation data. The method solves the problem that the magnetic material non-linearity characteristics cannot be taken into consideration in an electromagnetic force engineering computing method.

Description

technical field [0001] The invention relates to an electromagnet magnetic field simulation method based on a finite element method, which can be used for accurate calculation of the electromagnet electromagnetic field. Background technique [0002] In order to achieve the purpose of highly automated launch, solenoid valves are used in the control, blow-off, isolation, and pressurization valves of the new launch vehicle booster delivery system. The solenoid valve changes the opening and closing state of the valve by generating magnetic force through the energized solenoid. The design of the electromagnet is an important part of the design of the solenoid valve. The core task of the electromagnet design is to check the suction force of the electromagnet. According to the general development process of electromagnets, the main structural dimensions of electromagnets are usually determined according to the performance after the principle prototype is produced, which greatly affe...

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Problems solved by technology

[0003] The technical solution problem of the present invention is: to overcome the deficiencies of the prior art, provide a kind of electromagnet magnetic field simulation method based on finite element analysis, realize the accurate calculation of electromagnet magnetic field, overcome and solve the problem that cannot be solved in the electromagnetic force engineering calculation method Consider the non-linear characteristics of magnetic materials, reduce the development cycle of solenoid valves to a large extent, and improve product reliability

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