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A Calculation Method of Vehicle Interior Noise

A calculation method and technology of automobiles, applied in the field of automobile noise, can solve the problems of inaccurate calculation of interior noise

Active Publication Date: 2020-05-22
JIANGLING MOTORS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to at least solve the problem that the noise in the car cannot be accurately calculated in the prior art, and proposes a method for calculating the noise in the car

Method used

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  • A Calculation Method of Vehicle Interior Noise
  • A Calculation Method of Vehicle Interior Noise
  • A Calculation Method of Vehicle Interior Noise

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] see figure 1 , is the method for calculating interior noise of an automobile in the first embodiment of the present invention, including steps S11-S15.

[0034] In step S11, the finite element models of the frame, drive shaft and rear axle of the vehicle are respectively established and compared with their corresponding measured modes...

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Abstract

A car noise calculation method in the car, including the establishment of the car frame, transmission shaft and the finite element model of the rear axle, and the corresponding measured modulus of the rear axle;The finite element model of the axis and the rear axle performed the modal calculation, and the results of the modal calculation were introduced into the pure rigid multi -body model of the car to establish the rigid soft coupling model of the car;Organize the time domain response analysis to obtain the load of each attachment point of the engine suspension; obtain the transmission function of the target position of each attached point to the target position in the car;The passing function calculates the noise level level level of each attachment point to the target position.The present invention extracts the accurate load data of each attached point through the rigid soft coupling model of the car, and combines the transmission function to obtain the accurate noise sound level level in the car in the real -time domain of the engine suspended point.

Description

technical field [0001] The invention relates to the technical field of automobile noise, in particular to an automobile interior noise calculation method. Background technique [0002] With the development of society and the advancement of technology, people's requirements for car quality are increasing day by day, and the noise problem in the car has attracted more and more attention. Car noise, vibration and the car ride comfort caused by it have become a measure An important indicator of the quality of a car. [0003] The noise inside the car is mainly produced by noise sources such as the car engine, the central transmission system, and tires, among which the noise generated by the car engine accounts for the main part. The essence of the calculation method of the noise inside the car is to calculate the noise sound pressure level transmitted to the driver in the car through the relevant noise source. At present, the noise level inside the car is mainly calculated by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/20G06F30/15
CPCG06F30/15G06F30/20G06F30/23Y02T90/00
Inventor 邓磊段龙杨刘波余显忠金栋孙念芬官明俊
Owner JIANGLING MOTORS
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