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A method for obtaining the thickness distribution rate of acoustic package components

A thickness distribution, acoustic package technology, applied in geometric CAD, design optimization/simulation, sustainable transportation, etc., can solve the problems of inability to guarantee measurement accuracy, time-consuming, low acquisition efficiency, etc.

Active Publication Date: 2022-05-20
CHINA AUTOMOTIVE ENG RES INST
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Problems solved by technology

[0005] The present invention provides a method for obtaining the thickness distribution rate of the acoustic package parts, and the technical problem to be solved is that the existing method of manually measuring the thickness of the acoustic package in the CATIA digital model to obtain the thickness distribution rate consumes a lot of time, and the acquisition efficiency is low. Guaranteed measurement accuracy

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  • A method for obtaining the thickness distribution rate of acoustic package components
  • A method for obtaining the thickness distribution rate of acoustic package components
  • A method for obtaining the thickness distribution rate of acoustic package components

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Embodiment 2

[0086] Such as Figure 4 As shown, the difference between this embodiment and embodiment 1 lies in that steps S1, S5, and S6 are different, and this embodiment mainly explains these differences, which are correspondingly represented by steps S1', S5', and S6'. This embodiment also takes the same automotive interior part of Embodiment 1 as an example.

[0087] S1'. Set the thickness classification value of the automotive interior parts.

[0088] This step specifically includes:

[0089] S11. Acquiring the minimum thickness H of the automotive interior parts MIN and maximum thickness H MAX ;

[0090] S12'. At the minimum thickness H MIN and the maximum thickness H MAX A value is selected at the preset difference interval Y to obtain a plurality of thickness classification values ​​P1, P2...Pn, where n is the number of the thickness classification values.

[0091] X=3, then the thickness classification values ​​of P1, P2...P6 in this embodiment are 0, 3, 6, 9, 12, and 15. ...

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Abstract

The present invention relates to the field of acoustic package components, and specifically discloses a method for obtaining the thickness distribution rate of acoustic package components, comprising the steps of: setting the thickness classification interval or thickness classification value of the acoustic package components; establishing the surface thickness of the acoustic package components Finite element model; establish one-dimensional elements between upper and lower surfaces or inner and outer surfaces in the finite element model; obtain the length values ​​of all one-dimensional elements in the finite element model; classify the length values ​​of the one-dimensional elements into corresponding The thickness classification interval or the corresponding thickness classification value; calculate the corresponding thickness distribution according to the number of the one-dimensional unit length values ​​classified by each thickness classification interval or thickness classification value Rate. The invention does not need any manual measurement, and uses software to establish the finite element model of the acoustic package parts, establish, export, acquire and classify the one-dimensional unit, etc., which ensures the acquisition accuracy and accuracy of the thickness distribution rate and improves the gain efficiency.

Description

technical field [0001] The invention relates to the field of acoustic package components, in particular to a method for obtaining the thickness distribution rate of the acoustic package components. Background technique [0002] With the increasingly fierce competition in the automobile market and the improvement of consumers' requirements for automobile products, future automobiles will continue to advance in the direction of safety, environmental protection, low cost, informatization, and comfort. Consumers' satisfaction with car comfort is mainly reflected in their satisfaction with the overall NVH performance of the car, that is, consumers want low noise, low vibration, and smooth driving experience. According to incomplete statistics, about 1 / 3 of customer dissatisfaction surveys are related to NVH performance; about 1 / 5 of after-sales service is related to NVH performance. Therefore, for automobile manufacturers, it is particularly urgent to improve the NVH performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/15
CPCG06F30/23G06F30/15Y02T90/00
Inventor 杜丘美李沛然邱斌蒋大勇
Owner CHINA AUTOMOTIVE ENG RES INST
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