两层堆码包装单元的随机振动响应  

Response of Two Layer Stacked Packaging Unit in Random Vibration

作　　者：林深伟 王志伟[1,2,3] LIN Shenwei;WANG Zhiwei(Packaging Engineering Institute,Jinan University,Zhuhai Guangdong 519070,China;Key Laboratory of Product Packaging and Logistics of Guangdong Higher Education Institutes,Jinan University,Zhuhai Guangdong 519070,China;Zhuhai Key Laboratory of Product Packaging and Logistics,Jinan University,Zhuhai Guangdong 519070,China;Mechanical Engineering Department,GP Electronics(SZ) Limited,Shenzhen Guangdong 518052,China)

机构地区：[1]暨南大学包装工程研究所,广东珠海519070 [2]暨南大学产品包装与物流广东普通高校重点实验室,广东珠海519070 [3]暨南大学珠海市产品包装与物流重点实验室,广东珠海519070 [4]金山电子(深圳)有限公司机械工程部,广东深圳518052

出　　处：《包装学报》2017年第4期10-19,共10页Packaging Journal

基　　金：国家自然科学基金资助项目(50775100)

摘　　要：试验研究了两层堆码包装单元在不同振动等级、不同约束方式下的随机振动响应,对固定约束方式下堆码包装单元的响应特性采用有限元法作了进一步分析。结果表明:两层堆码包装单元顶层产品的振动主要受第一共振频率控制,底层产品的振动受到第一和第二共振频率共同控制。产品加速度在共振频率附近的响应很大,在非共振频率范围的响应很小。产品加速度响应功率谱主要为产品的共振响应谱。有限元计算得到的共振频率和产品加速度PSD曲线趋势与试验结果较好吻合,表明有限元法是堆码包装单元随机振动响应分析的有效方法。Random vibration responses of two layer stacked packaging unit in different levels of vibrations anddifferent constraints were experimentally investigated.The finite element method was used to analyze the responseof two layer stacked packaging units in the fixed constraint.The results showed that the product vibration in upperlayer was mainly controlled by the first resonant frequency,and the product vibration in lower layer was controlledtogether by the first and second resonant frequencies.The acceleration response of product was large in the area ofresonant frequencies,and small in the area of non-resonant frequencies.The power spectrum of product accelerationresponse was mainly the resonance response spectrum of product.The resonance frequencies and acceleration PSDsof product obtained from the finite element method were in agreement with the experimental ones,which indicatedthat the finite element method provided an effective tool for the analysis of stacked packaging units in randomvibration.

关 键 词：堆码包装单元 随机振动 功率谱 约束方式 有限元法 

分 类 号：TB48[一般工业技术—包装工程] TH113.1[机械工程—机械设计及理论]