油烟机壳体的振动响应优化设计

余虎;侯宏;戴杨

振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 179-182.

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 179-182.
论文

油烟机壳体的振动响应优化设计

  • 余虎1; 侯宏1; 戴杨2
作者信息 +

Design optimization of vibration response for range hood’s shell

  • Yu Hu1;Hou hong1; Yang Dai2
Author information +
文章历史 +

摘要

为了降低油烟机壳体振动产生的噪声,基于油烟机壳体有限元模型,计算壳体在电机激励下的振动响应。在此基础上,以壳体四个部分的厚度为设计变量,保持壳体质量不超过原壳体质量,以壳体上四个敏感点的质点振速峰值为目标函数,对其进行了优化设计研究。利用商业软件Nastran 计算质点振速,基于DOE 方法利用iSIGHT-FD 对壳体厚度进行优化,得到了优化的结构厚度。优化后,设计域各点的质点振速峰值均有不同程度的降低,振动速度级降低最大值达到8.2dB。结果表明,在保持吸油烟机壳体质量不增加的情况下,通过改变壳体四个部分的厚度可以达到降低辐射噪声的效果。

Abstract

For the purpose of reducing noise from the vibration of range hood’s shell, the
vibration response of it is calculated based on the finite element model of range hood’s shell when
excited by the motor. Then, the optimal geometric design of the structure is preformed using the
peak particle velocity at four sensitive nodes as the objective function during which the
thicknesses of the four parts are adopted as the designing variable. In addition, the weight of the
structure is kept no more than its original weight. The particle velocity is calculated by using the
commercial software Nastran and the DOE method is utilized to obtain the optimized shell
thickness. After which, the particle velocity peak of the designed area is decreased more or less
and a maximum 8.2 dB reduction of vibration velocity level can be obtained. Results show that the
changes of the four part’s thicknesses can reduce the radiating noise of the range hood at the
condition of no increase of the shell’s weight.

关键词

振动 / 有限元 / 最优化 / 油烟机

Key words

vibration / finite element / optimize / range hood

引用本文

导出引用
余虎;侯宏;戴杨.
油烟机壳体的振动响应优化设计[J]. 振动与冲击, 2011, 30(11): 179-182
Yu Hu;Hou hong;Yang Dai. Design optimization of vibration response for range hood’s shell[J]. Journal of Vibration and Shock, 2011, 30(11): 179-182

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