分析天平包装件随机振动仿真分析及优化设计

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摘要目的将有限元分析方法应用于分析天平包装件的模态分析和随机振动的加速度PSD分析，以获得应力分布云图和加速度功率谱密度响应曲线；对缓冲衬垫进行多目标优化设计以获得低成本高性能的缓冲结构。方法在Solidworks中建立有限元模型，用Ansys Workbench进行动力学仿真，分析包装件运输过程中的变形和振动情况，找出缓冲衬垫的薄弱点，以响应加速度、最大变形量和包装件质量为目标函数对分析天平缓冲衬垫进行响应曲面优化设计。结果经过响应曲面优化分析，优化值与初始值相比，包装件各项性能得到了提升。结论通过对分析天平包装件的仿真分析和优化设计，可以对缓冲衬垫结构尺寸进行改进，降低产品运输途中的破损率，并实现缓冲结构轻量化。

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	米男男
	李光

关键词 ：分析天平包装件, 随机振动分析, 功率谱密度函数, 优化设计

Abstract：The finite element analysis method was used to analyze the modal and random vibration acceleration PSD of analytical balance package to obtain the stress distribution nephogram and the acceleration power spectral density response curve.The multi-objectives optimization design on cushioning pads were performed to obtain the cushioning structure of low cost and high property.The finite element model was established via Solidworks,and the dynamic simulation was done via Ansys Workbench.The deformation and vibration properties of the package in the transportation process were analyzed to find out the weak points of the package.The Optimal design of response surface was conducted the cushioning pad with acceleration,maximum deformation and mass of the package as the objective function.After response surface optimization analysis,the performance of the package was improved.Through the simulation analysis and the optimization design on the analytical balance package,the structure size of cushioning pad can be improved,the breakage rate of the product during transportation can be reduced,and the cushioning structure can be lightweight.

Key words： Analysis of balance packs random vibration analysis PSD optimization design

收稿日期: 2017-12-12 出版日期: 2019-02-15

引用本文:

米男男，李光. 分析天平包装件随机振动仿真分析及优化设计[J]. 振动与冲击, 2019, 38(4): 206-212.
MI Nannan, LI Guang. Random vibration simulation analysis and an optimization design of analytical balance packages. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(4): 206-212.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I4/206

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