A mapping method from autoform stamping information to collision simulation model

Abstract

The invention provides a mapping method from Autoform stamping forming information to a collision simulation model, which belongs to the technical field of automobiles. It solves the problem of how to realize the mapping from stamping forming information to collision simulation model robustly and accurately in the prior art. This method comprises: A, carry out geometric grid division processing to the geometric model that needs to be mapped, and save as the stamping simulation source model and the collision simulation source model with the same grid, and carry out offset and node renaming to the stamping simulation source model at the same time ; B. Select two groups of node numbers corresponding to each other, and each group of node numbers is at least three characteristic nodes; C. Carry out stamping forming simulation on the processed stamping simulation source model; D. Perform load and constraint on the collision simulation source model E. Import the stamping information contained in the stamping simulation result model into the collision substructure model to obtain a model for collision simulation with stamping information. This method realizes stamping information mapping more robustly 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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