Low noise optimization design of plastic oil cooler cover based on the liquid-solid coupling method and multi-objective topological optimization

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (7) : 186-191.

Zhang Jun-hong1,2, Guo Qian1, Wang Jian1, Chen Kong-wu1, Ma Liang1,2

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Abstract

It has been proved that oil cooler cover is a main source of surface radiated noise for engine. And the existence of cooling liquid has a great influence on the vibration of oil cooler cover. Taking the fluid pressure as pre-stress and using the liquid-solid coupling method, a liquid-solid coupled model is established and used to predict the vibration and radiated noise of plastic oil cooler cover firstly. According to the prediction results, the main coupling modal frequencies that have great contribution to the radiated noise of the plastic oil cooler cover are identified. Then the multi-objective optimization is applied to structure topography optimization using the exponential weighted method. Compared with the initial plastic oil cooler cover, it has a higher performance: the overall noise is reduced 1.79 dB.

Key words

plastic oil cooler cover / liquid-solid coupling / multi-objective topography optimization / exponential weighted method

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Zhang Jun-hong1,2, Guo Qian1, Wang Jian1, Chen Kong-wu1, Ma Liang1,2. Low noise optimization design of plastic oil cooler cover based on the liquid-solid coupling method and multi-objective topological optimization[J]. Journal of Vibration and Shock, 2016, 35(7): 186-191

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