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Method and device for arranging vehicle body damping

A damping and body technology, applied in the field of vehicles, can solve the problems of poor vibration reduction and noise reduction, high computational cost, and inability to correlate with noise.

Pending Publication Date: 2020-07-28
BEIJING AUTOMOTIVE IND CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In related technologies, when arranging damping, finite element calculations need to be repeated, the calculation cost is high, and it cannot be directly related to noise, resulting in poor vibration and noise reduction effects

Method used

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  • Method and device for arranging vehicle body damping
  • Method and device for arranging vehicle body damping
  • Method and device for arranging vehicle body damping

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Embodiment Construction

[0021] First, the application scenarios of the present disclosure are described. The present disclosure can be applied to the scene of vehicle vibration reduction and noise reduction. With the improvement of people's requirements for vehicle comfort, it is very important to reduce the vibration and noise of vehicles. In related technologies, the vibration and noise of the vehicle can be reduced by arranging damping for the vehicle body. For example, damping can be arranged by modal strain energy method, complex eigenvalue method, direct frequency response method, etc. However, the modal strain energy method is based on the structure The modal strain energy cannot be directly related to the noise; the complex eigenvalue method is difficult to solve, and it cannot directly provide a reference for the damping arrangement; the direct frequency response method cannot provide the correlation between the damping position and the noise inside the vehicle. Therefore, according to the m...

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Abstract

The invention relates to a method and device for arranging vehicle body damping, and the method comprises the steps: obtaining a sound and vibration coupling model corresponding to a vehicle, whereinthe sound and vibration coupling model comprises a preset coupling model of a vehicle body and a sound cavity of the vehicle; determining a to-be-arranged area where damping is to be arranged from a target area where damping can be arranged on the vehicle body; obtaining a damping thickness corresponding to the to-be-arranged area; and arranging damping on the to-be-arranged area according to thedamping thickness. Thus, the to-be-arranged area of the to-be-arranged damping of the vehicle can be obtained according to the acoustic vibration coupling model, the to-be-arranged area is directly determined according to the noise in the vehicle, so that the time consumed by repeated trial calculation can be reduced, the damping is only arranged in the to-be-arranged area, and the vibration and noise reduction effect is better under the condition that the damping quality is fixed.

Description

technical field [0001] The present disclosure relates to the technical field of vehicles, in particular, to a method and device for arranging damping of a vehicle body. Background technique [0002] With the development of the economy and the progress of society, people have higher and higher requirements for the comfort of cars. Among them, vibration noise is an important factor affecting the comfort of vehicles. Therefore, while the development of high-speed vehicles, reduce the vibration of cars. Noise has become one of the important directions of vehicle technology research. [0003] Damping is a material that can reduce vibration and noise. Selecting suitable damping materials and properly arranging body damping can not only reduce the vibration and noise of the vehicle, but also reduce weight and cost. In the related art, when arranging the damping, finite element calculations need to be repeated, the calculation cost is high, and it cannot be directly related to the ...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/23G06F119/10
CPCY02T90/00
Inventor 苗玉苹王智文栗娜敬敏
Owner BEIJING AUTOMOTIVE IND CORP
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