Mapping method of Autoform press forming information to collision simulation model

Abstract

The invention provides a mapping method of Autoform press forming information to a collision simulation model and belongs to the technical field of automobiles. The mapping method is used for solving the problem of stably and accurately mapping the press forming information to the collision simulation model in the prior art. The method comprises the steps of A, performing geometrical meshing process on a geometrical model needing to be mapped and saving as a press simulation source model and a collision simulation source model having the same meshes, and meanwhile, performing excursion and node renaming on the collision simulation source model, B, selecting two groups of node numbers corresponding to each other one to one and assigning at least three characteristic nodes to each group of node numbers, C, performing press forming simulation on the processed collision simulation source model, D, applying loading and constraint to the collision simulation source model, and E, importing the press forming information carried in a press forming simulation result model into a collision sub-structure model to obtain a model carrying the press forming information and for collision simulation. The method is capable of realizing press information mapping more stably and accurately.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to a mapping method from Autoform stamping forming information to a collision simulation model. Background technique [0002] In the automobile structure, most of the body structural parts and covering parts are obtained by stamping, and these structural parts and covering parts are the key energy-absorbing parts when the car body collides, and play an important role in the passive safety of the car. important role. Stamping of materials will have a significant impact on the mechanical properties and geometry of the material itself, such as thickness variation, residual stress, plastic strain, etc. However, in the traditional crash simulation, the material parameters are used in an ideal state, that is, the thickness and mechanical properties of the sheet itself are considered to be unchanged, and the crash simulation results obtained in this way may cause calculation errors of up...

AI Technical Summary

Problems solved by technology

This method solves how to realize the mapping of Autoform stamping forming information to the collision simulation model robustly and accurately

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