Method for establishing CAE linear analysis sub-assembly connection relation

Abstract

The invention relates to a method for establishing a CAE linear analysis sub-assembly connection relation. The method is characterized by comprising the following steps of: 1) dividing an assembly: according to a design process of the whole vehicle, dividing a linear analysis model into nine parts, namely a white vehicle body (1), an engine hood (2), left and right front doors (3), left and right rear doors (4), a secondary frame (5), a trunk lid (6), a front-end module (7), an instrument board cross beam (8) and seats (9); 2) defining node and unit sections of each assembly: according to the assemblies divided in the step 1), performing node and unit section definition on a numerical model of each assembly by utilizing ANSA preprocessing software; 3) defining a connection position node number of each assembly: establishing a rigid connection at a connection position in the numerical model of each assembly, and performing redefinition on a central node of the connection position according to a node section in a format; defining the format of a node number of a connection point as follows: first two digits of the minimum value of the section 1# of a part plus first two digits of the minimum value of the section 2# of the part plus node range; and 4) establishing a connection file. (/b)

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, and specifically relates to a method for establishing connection relations of CAE linear analysis sub-assemblies. Background technique [0002] At present, CAE linear analysis of various OEMs has various analysis conditions, which need to be connected together for CAE analysis and investigation, such as body modal and stiffness analysis, and the model state is the main body, front-end module, sub-frame, instrument It is composed of plate beams and front and rear anti-collision beams; another example is the sag stiffness analysis of the door installation state, which requires the door to be installed on the body for analysis. The process of establishing connections between assemblies in traditional CAE linear analysis is: import the required assembly parts into the pre-processing software to connect the installation points one by one, and then carry out corresponding CAE analysis by constra...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for establishing the connection relationship of sub-assemblies in CAE linear analysis, which fundamentally solves the problem of the connection position between the assemblies after the existing connection method analyzes working conditions and requires many assemblies. Difficult to determine; frequent update of connection location data, easy to miss connection points, inaccurate simulation calculation results, etc.

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