Vibration Characteristics and Optimization of Variable Cross-Section Cylindrical Shell Structure under Multi-Point Excitation

Abstract:

According to the loading feature and the structure form, a gear reducer box can be simplified to a variable cross-section cylindrical shell structure excited by multipoint force. Meanwhile, a theoretical model is developed to analyze the structural vibration and acoustic characteristics and to find out the dominant component of vibration. Then, the influence of different parameters, such as, the local structure thickness, constrained damping layer and the insulation layer on acoustic radiation performance of the variable cross-section cylindrical shell structure are investigated by numerical calculation. Finally, an optimization design scheme of a low-noise structure is proposed because of the two aspects about noise source and noise transfer path.

• Periodical: Applied Mechanics and Materials (Volume 372)
• Pages: 547-551
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.372.547
• Online since: August 2013
• Authors: Lin Chen, Xiao Zhong Xie, Zhuo Li, Fu Zhen Pang
• Keywords: Constrained Damping Layer, Statistical Energy Method, Variable Cross-Section Cylindrical Shell Structure, Vibration Characteristic

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