Numerical value simulation method for spot welding connection and failure thereof
A numerical simulation and spot welding technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems that the welding spot model grid does not consider the feasibility of engineering application, and it is difficult to practically apply the value, so as to avoid Effects of complexity, improved precision, and strong adaptability
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[0065] The specific construction scheme of the solder joint model of the present invention is: according to the structural characteristics of the solder joints, which are divided into two regions, the solder nugget zone and the heat-affected zone, due to the changes in the material properties, the volume grid and the shell grid are used to establish the welding The finite element model of the solder joint composed of the core zone and the heat-affected zone provides a targeted implementation basis for the setting of the solder joint failure parameters. This method proposes specific construction rules for the formation of the solder joint model grid, which is suitable for The programming is realized automatically, and the specific steps for establishing the solder joint model are:
[0066] The first step is to determine the shape and size of the weld nugget area grid: the weld nugget area is composed of one or more layers of grids, and each layer is composed of four volume grids, a...
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