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Method for obtaining thickness distribution rate of acoustic package component

A technology of thickness distribution and acoustic package, applied in special data processing applications, geometric CAD, sustainable transportation, etc., can solve problems such as time-consuming, low acquisition efficiency, and inability to guarantee measurement accuracy

Active Publication Date: 2020-10-30
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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  • Method for obtaining thickness distribution rate of acoustic package component
  • Method for obtaining thickness distribution rate of acoustic package component
  • Method for obtaining thickness distribution rate of acoustic package component

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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 invention relates to the field of acoustic package components, and particularly discloses a method for obtaining the thickness distribution rate of an acoustic package component, and the method comprises the following steps: setting a thickness classification interval or a thickness classification value of the acoustic package component; establishing a finite element model of the surface of the acoustic package component; establishing a one-dimensional unit between the upper and lower surfaces or the inner and outer surfaces in the finite element model; acquiring length values of all one-dimensional units in the finite element model; classifying the length values of the one-dimensional units into the corresponding thickness classification intervals or classifying the length values of the one-dimensional units into corresponding thickness classification values; and calculating a corresponding thickness distribution rate according to the number of the one-dimensional unit length values classified by each thickness classification interval or thickness classification value. According to the method, any manual measurement is not needed, the establishment of the finite element modelof the acoustic package component, the establishment, export, acquisition and classification of the one-dimensional unit and the like are carried out by means of software, the acquisition precision and accuracy of the thickness distribution rate are ensured, and the acquisition efficiency is improved.

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...

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Application Information

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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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