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Method for solving front windshield glass calculation errors in CAE offset impact

A front windshield and calculation error technology, applied in calculation, special data processing applications, instruments, etc., can solve the problems of long debugging time, errors in the front windshield, difficult calculation convergence, etc., to shorten the project cycle and avoid calculation termination , the effect of simple operation

Inactive Publication Date: 2015-10-14
BRILLIANCE AUTO
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  • Application Information

AI Technical Summary

Problems solved by technology

However, when the front windshield and the left hinge of the bonnet collide violently, this method is prone to errors in the front windshield and the calculation is terminated. Therefore, there are problems that the calculation is difficult to converge, and the resulting debugging time is long, resulting in a long project cycle.

Method used

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  • Method for solving front windshield glass calculation errors in CAE offset impact
  • Method for solving front windshield glass calculation errors in CAE offset impact
  • Method for solving front windshield glass calculation errors in CAE offset impact

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Embodiment Construction

[0013] The following combination Figure 1~3 , the content of the present invention will be described in detail through specific embodiments. The method for solving the calculation error of the windshield glass before the CAE offset collision includes the following steps:

[0014] 1) Build a model : On the basis of the existing finite element mesh of the front windshield, the same parts are copied. At this time, the front windshield is a double-layer structure, and the double-layer structure is connected by node coupling, with a thickness of 5mm.

[0015] 2) set material : Assign two material properties to the front windshield. The glass layer I part is assigned the material model MAT123 MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY in the ls-dyna software, and the glass layer II part is assigned the MAT7_BLATZ-KO_RUBBER material model in the ls-dyna software.

[0016] 3) Debug model: Debug, calculate, analyze and view post-processing results.

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Abstract

The invention relates to a method for solving front windshield glass calculation errors in CAE offset impact. The method comprises the following steps of: 1) establishing a model: on the basis of an existing front windshield glass finite grid, copying the same parts, forming double-layer front windshield glass structures, and connecting the double-layer structures in a node coupling mode, wherein the thickness is 5 mm; 2) setting the material texture: endowing front windshield glass with two material properties, endowing a glass-layer I part with an MAT123 MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY material model in ls-dyna software, and endowing a glass-layer II part with an MAT7_BLATZ-KO_RUBBER material model in the ls-dyna software; and 3) debugging the model: debugging, calculating, analyzing and viewing a post-processing result.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, in particular to a method for solving the calculation error of the windshield glass before CAE offset collision. Background technique [0002] In recent decades, the actual vehicle test of vehicle crash safety has been an authoritative means to assess the passive safety of vehicles. Under the guidance of the guidance system, the vehicle crashes into the honeycomb aluminum barrier. The entire collision process is recorded by high-speed camera equipment for slow playback and reproduction. The electrical measurement system sorts out the data collected by the sensors arranged in the vehicle, and compares the sorted results with the standards to assess the collision of the tested vehicle. performance. In practice, the collision physical test cycle is long, the cost is high, and there are limitations in data collection. With the development of numerical simulation technology, it has gradually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王志涛乔鑫
Owner BRILLIANCE AUTO
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