关键词: 振动与波, 模态分析, 结构优化, 减振降噪, 振型

Abstract: There are 3 ways to reduce refrigerators noise: reducing the sound source, optimizing the sound delivery path, and repressing the response. In this paper, the second way is discussed only. Through the modal analysis of the backplates of some Haier refrigerators, their natural frequencies and vibration modes are found. The optimal design of the backplate structure is presented. The resonance between the backplate and the entire refrigerator can be avoided and the noise can be reduced.

Key words: vibration and wave, modal analysis, structural optimization, vibration and noise reduction, vibration mode