A sheet metal connection method verified by cae based on design data

Abstract

The invention relates to a design data and CAE verification-based metal plate connection method. According to the technical schemes of the invention, the output ends of an engine hood welding spot data unit, an engine hood CO2 shielded welding data unit and an engine hood expansion adhesive data unit are connected with a data conversion unit through a data collection unit; the data conversion unit is connected with a finite element mesh model; the output end of the data conversion unit is connected with an information acquisition unit, a vip2 file conversion unit and an CAE analog analysis unit sequentially through CAE metal plates so as to be connected with the input end of a displacement curve drawing unit; the output end of an actual test acquisition unit is connected with the input end of a test point arrangement acquisition unit; a universal conversion unit is connected with the input end of a universal displacement curve drawing unit through the other CAE analog analysis unit; and the output ends of the displacement curve drawing unit, the test point arrangement acquisition unit and the universal displacement curve drawing unit are connected with a comparison unit. With the method of the invention adopted, over design caused by manual fault can be prevented, and the waste of materials can be decreased.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle sheet metal connection methods, in particular to a sheet metal connection method verified by CAE based on design data. Background technique [0002] The establishment of sheet metal connection is one of the key parts of CAE modeling, and the correctness of connection directly affects the accuracy and guidance of CAE simulation calculation results. [0003] For sheet metal connections mainly include solder joints, CO 2 Protection welding, structural adhesive, expansion adhesive and spot welding sealant. The general conversion method in the industry is to establish a collision analysis model first when modeling in CAE, then convert the collision analysis model to a stiffness analysis model, and then perform the corresponding stiffness analysis. Since the connection type used in the crash analysis model is different from the stiffness analysis model, it is necessary to convert the solder join...

AI Technical Summary

Problems solved by technology

There is no problem with this method and practice itself, but there are two key points: 1. The information of the welded parts is easily lost when the solder joints are converted, resulting in incorrect connection and affecting the calculation results; 2. Sheet metal layout glue and CO 2 There are many positions for shielded welding, and after conversion, the glue and CO 2 The reconstruction of shielded welding increases the workload and increases the modeling time

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