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Thickness statistical method for complex-surface car acoustic part for CAE simulation analysis

A technology for acoustic components and complex profiles, applied in the field of statistical computing, can solve the problems of difficulty in ensuring the accuracy of calculation results, differences, and time-consuming, so as to shorten work time, reduce time-consuming, and ensure accuracy and effectiveness. sexual effect

Active Publication Date: 2014-09-10
WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very time-consuming to use this method. It takes more than 40 hours to complete the statistics of the thickness of a car front wall sound insulation pad, and different personnel, due to differences in measurement methods, the statistical results will also vary greatly, resulting in When calculating the acoustic performance in the later stage, the accuracy of the calculation results is difficult to guarantee

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  • Thickness statistical method for complex-surface car acoustic part for CAE simulation analysis
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  • Thickness statistical method for complex-surface car acoustic part for CAE simulation analysis

Examples

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Effect test

Embodiment 1

[0050] Embodiment 1: Thickness percentage statistics of a kind of carpet sound insulation pad product

[0051] a. Start the 3D graphics processing software CATIA, and open the CAD model file of the carpet sound insulation mat that requires thickness percentage statistics.

[0052] b. Extract the upper and lower surfaces (A side and B side) of the carpet sound insulation mat related to the thickness measurement, of which the side that is attached to the body sheet metal is the B side, and the other side is the A side, and the thickness measurement translates to a measurement of the distance between two surfaces.

[0053] c. In the CATIA software, the A and B surfaces are divided and partitioned, and the carpet sound insulation pad is partitioned according to the partition principle, and divided into 10 calculation areas (A1, ..., A10), and the solid line is the division boundary of each area . Such as Figure 8 As shown in the figure, only the A side is displayed and marked,...

Embodiment 2

[0060] Embodiment 2: The thickness percentage statistics of another kind of carpet sound insulation pad product

[0061] a. Start the 3D graphics processing software CATIA, and open the CAD model file of the carpet sound insulation mat that requires thickness percentage statistics.

[0062] b. Extract the upper and lower surfaces (A side and B side) of the carpet sound insulation mat related to the thickness measurement, of which the side that is attached to the body sheet metal is the B side, and the other side is the A side, and the thickness measurement translates to a measurement of the distance between two surfaces.

[0063] c. In the CATIA software, the A and B surfaces are divided and partitioned, and the carpet sound insulation pad is partitioned according to the partition principle, and it is divided into 9 calculation areas (B1, ..., B9), and the solid line is the division boundary of each area . Such as Figure 9 As shown in the figure, only the B side is display...

Embodiment 3

[0070] Embodiment 3: Thickness percentage statistics of a cowl sound insulation pad product

[0071] a. Start the 3D graphics processing software CATIA, and open the CAD model file of the carpet sound insulation mat that requires thickness percentage statistics.

[0072] b. Extract the upper and lower surfaces (A side and B side) of the carpet sound insulation mat related to the thickness measurement, of which the side that is attached to the body sheet metal is the B side, and the other side is the A side, and the thickness measurement translates to a measurement of the distance between two surfaces.

[0073] c. In the CATIA software, the A and B surfaces are divided and partitioned, and the carpet sound insulation pad is partitioned according to the partition principle, and it is divided into 6 calculation areas (B11,..., B16), and the solid line is the division boundary of each area . Such as Figure 10 As shown in the figure, only the B side is displayed and marked, and...

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Abstract

The invention provides a thickness statistical method for a complex-surface car acoustic part for CAE simulation analysis. The method includes: starting CATIA software, and opening a car acoustic part CAD model file; extracting a complex surface A and a complex surface B which are related to thickness measuring; segmenting the complex surface A and the complex surface B in the CATIA software; using thickness as row value and partition label as line value to build a thickness information statistical table; setting the thickness calculation direction of each partition; executing distance statistical calculation of each partition, measuring the area of the partition surface of the complex surface B, and recording calculation results in an Excel file; completing statistical calculation of all partitions one by one, and recording the calculation results in the Excel file; using the calculation function of Excel to complete final thickness percentage statistical calculation. The method is convenient to operate, a product is partitioned by a standard processing method, and statistical result differences of different staffs are reduced.

Description

technical field [0001] The invention relates to a statistical calculation method, especially a method for quickly statistically calculating the thickness percentage of automotive acoustic components with complex profiles by using a surface distance detection tool in 3D CAD software, which belongs to the statistical energy (SEA) method for acoustic performance of automotive acoustic components The technical field of CAE simulation analysis. Background technique [0002] When using the statistical energy method to perform CAE (computer-aided engineering) simulation analysis on the sound absorption and sound insulation performance of acoustic components, it is necessary to count the thickness percentage distribution of the acoustic components: starting from 5mm to the maximum thickness of the product, such as 35mm, with 5mm in the middle For the interval, calculate the ratio of the total area corresponding to each thickness in the product to the area of ​​the entire product. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 周国建阮静田秀杰黄威
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD