automobile windshield forming simulation method based on COMSOL Multiphysics

Abstract

The invention relates to an automobile glass GT forming simulation method based on COMSOL Multiphysics. The automobile glass GT forming simulation method comprises the steps that S1, building a simplified heating furnace model and a plate glass original sheet model; S2, according to the obtained heating furnace model and the sheet glass original sheet model, simulating a glass heating and softening process by simulating a temperature field and a stress field through software; S3, constructing a physical model of the male mold, the thermal forming ring and the plate glass geometry, and simulating a thermal bending forming stage through software simulation stress field and temperature field; and S4, after hot bending forming is completed, constructing a cold forming ring, simulating the glass mold falling stage after hot bending forming, conducting simulation operation, and acquiring a simulation result. Three-dimensional modeling is carried out through software, and finite element analog simulation is carried out on the automobile glass GT forming heating stage, the hot bending forming stage and the mold falling stage.

Description

technical field [0001] The invention relates to the field of forming simulation, in particular to a COMSOL Multiphysics-based GT forming simulation method for automobile glass. Background technique [0002] Automobile glass is a safety product that requires statutory testing. Depending on the location of use, its arch height, curvature, and radius of curvature are different. Automobile glass is divided into shallow curved glass and deep curved glass according to the radius of curvature and arch height. Curved glass with only one radius of curvature is single-curved glass, and curved glass with two or more radii of curvature is compound curved glass. In general, corner windows are single-curved shallow curved glass, doors and windows are shallow curved double-curved glass, and rear windows are deep curved compound curved glass. Due to the different sizes and shapes of glass, automotive glass requires different molding and quenching methods to meet the installation requireme...

AI Technical Summary

Problems solved by technology

Similar to the molding of other industrial products, when the molding process and mold design are unreasonable, the molding of glass will still produce molding defects, such as loose film, incomplete shape and surface cracks, etc.

At present, most domestic enterprises adopt the trial and error method when facing these problems, that is, to conduct a large number of practical experiments based entirely on the experience of engineers. The disadvantage of this method is that it is highly dependent on the experience of engineers, and it is difficult to quickly and effectively accumulate and inherit experience. Multiple tests make the production cycle of the product long, the cost increases, and the quality is not high

Images