Method and device for predicting sound insulation performance of automobile metal plate part assembly with plug

A performance prediction, sheet metal technology, applied in the field of sound insulation performance prediction method and prediction device of automobile sheet metal parts assembly, can solve the problems of inconvenient large-scale use, high cost, long cycle, etc., to avoid high cost and improve Efficiency, fast and accurate prediction effect

Active Publication Date: 2019-11-19
HEFEI CHANGAN AUTOMOBILE +1
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, various car companies mainly rely on the sound insulation wall between the reverberation chamber and the anechoic chamber to test the sound insulation performance of the sheet metal component assembly. On the sound insulation wall between the rooms (that is, the "upper wall"), the sound insulation performance of the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for predicting sound insulation performance of automobile metal plate part assembly with plug
  • Method and device for predicting sound insulation performance of automobile metal plate part assembly with plug
  • Method and device for predicting sound insulation performance of automobile metal plate part assembly with plug

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] The present invention will be described in detail below in conjunction with the drawings.

[0021] Such as figure 2 , image 3 The equipment for predicting the sound insulation performance of the automobile sheet metal component assembly with plugging shown includes tester 8, reverberation chamber 1, anechoic chamber 6, plate fixture 3, non-perforated plate, m different types The plugging pieces to be tested, m pieces of perforated plates, the sound insulation wall between the reverberation room 1 and the anechoic room 6, the spherical sound source 10 and the microphone 12 located in the reverberation room 1, and the anechoic room Sound intensity probe in 6 7. The spherical sound source 10 is placed in the lower left corner of the reverberation chamber 1. A rotating bracket 11 is placed at the center of the ground of the reverberation chamber 1. The height of the rotating bracket 11 is 1.5m, the length of the connecting rod of the rotating bracket 11 is 1.0m, and the mic...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Heightaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method and device for predicting the sound insulation performance of an automobile metal plate part assembly with a plug. According to the method and device, the sound insulation performance of a perforated plate part with no to-be-tested plugs and the sound insulation performance of a perforated plate part with a to-be-tested plug are detected and calculated, so that thesound transmission loss of the to-be-tested plug can be obtained; the sound transmission loss of a non-perforated plate part is detected, so that the sound transmission loss of the non-perforated plate part is obtained; the sound transmission loss of a to-be-predicted metal plate part assembly is calculated according to the sound transmission loss of the to-be-tested plug and the sound transmission loss of the non-perforated plate part; and thus, the sound insulation performance of the metal plate part assembly is rapidly and accurately predicted, and the problems of high cost and long perioddue to the fact that a metal plate part assembly is mounted can be solved, and efficiency is improved.

Description

technical field [0001] The invention belongs to the field of sound insulation and NVH performance of an automobile sheet metal assembly, and in particular relates to a sound insulation performance prediction method and a prediction device of an automobile sheet metal assembly with a blocking piece. Background technique [0002] With the development of the automobile industry, the noise level inside the car has gradually become an important factor affecting people's evaluation and purchase of cars. How to reduce the noise inside the car has become a difficult problem for NVH researchers. A large number of openings will be produced in the manufacturing and assembly process of the automobile body, and most of these openings are sealed by means of blocking parts (such as patches, blocking covers, etc.), and the sound insulation performance of these blocking parts has become a factor that affects the entire vehicle. A key factor in sound insulation. However, the sound insulation...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01M17/007G01M13/00G01N29/11
CPCG01M13/00G01M17/007G01N29/11
Inventor 蔡海波刘从光杨亮万玉平张思文马壮壮
Owner HEFEI CHANGAN AUTOMOBILE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap