Roller washing machine vibration radiation noise prediction method based on dynamic simulation

A technology of dynamic simulation and drum washing machine, applied in the field of simulation calculation

Active Publication Date: 2018-11-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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Problems solved by technology

[0004] In the field of structural vibration radiation noise calculation of drum washing machines, there is no complete calculation process similar to the present invention

Method used

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  • Roller washing machine vibration radiation noise prediction method based on dynamic simulation
  • Roller washing machine vibration radiation noise prediction method based on dynamic simulation
  • Roller washing machine vibration radiation noise prediction method based on dynamic simulation

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Embodiment 1

[0035] Such as Figure 2 to Figure 6 As shown, the specific implementation process of the vibration radiation noise prediction method of drum washing machine based on dynamic simulation in the present invention is:

[0036] Step 1: Establish an accurate and credible box model according to the actual mode of the box, such as figure 2 shown;

[0037]Step 2: Assemble the box body and the remaining rigid body model in the virtual prototyping software Adams, give the inner drum an initial rotation speed, and obtain the excitation of the flexible connection point.

[0038] The third step: Import the box model into Patran, import the excitation obtained in the second step at the flexible connection point, and obtain the vibration response result of the box through patran frequency response analysis.

[0039] The fourth step: Import the established acoustic model and the vibration response results obtained in the third part into Actran to calculate the vibration radiation noise of ...

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Abstract

The invention provides a roller washing machine vibration radiation noise prediction method based on dynamic simulation. According to the method, by performing many-body dynamic analysis, vibration response analysis and vibration radiation noise analysis on a washing machine, Actran computational analysis software based on finite elements / infinite elements is adopted finally, precise prediction ofexternal sound field A-weighted sound pressure level distribution can be realized, and a basis is provided for subsequent work more visually.

Description

technical field [0001] The invention relates to a method for predicting vibration radiation noise of a drum washing machine, and belongs to the technical field of simulation calculation. Background technique [0002] During the research and development process of the drum washing machine, due to the high-speed rotation of the drum, the inherent eccentricity of its structure caused many vibration problems. The vibration radiation noise generated by the vibration of the cabinet due to the eccentric rotation of the drum is an important part of the working noise of the drum washing machine. At present, the problem of vibration and noise of drum washing machines is serious, and customers complain constantly, which seriously affects the reputation of users of washing machine products. In the early development process of the washing machine, the computer-based digital simulation analysis method has been widely used in the analysis of the structural vibration and noise of the washi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 姜金辉杨泓基王轲毕鑫屈艺丹孔黄飞陈建鼎
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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