| 电路板组件板级跌落冲击动力学分析 |
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| 引用本文： | 刘芳,赵玫,孟光. 电路板组件板级跌落冲击动力学分析[J]. 机械强度, 2007, 29(5): 713-716 |
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| 作者姓名： | 刘芳 赵玫 孟光 |
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| 作者单位： | 上海交通大学,机械系统与振动国家重点实验室,上海,200240;上海交通大学,机械系统与振动国家重点实验室,上海,200240;上海交通大学,机械系统与振动国家重点实验室,上海,200240 |
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| 摘 要： | 从黏弹性角度研究电路板组件跌落冲击作用下的动力学特性.电路板基板材料主要以高分子树脂为主,是典型的黏弹性材料.为了简化分析,假设电路板四边简支.从黏弹性角度,基于板模型计算电路板在跌落冲击作用下的动力学响应.结果表明,电路板的黏性系数和尺寸对板的动力学特性有显著影响.这不仅有助于认清电路板跌落冲击作用下的真实动力学特性,完善其理论研究;还为电路板可靠性设计和可靠度评估提供理论依据.
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| 关 键 词： | 电路板 跌落冲击 动力学分析 黏弹性 |
| 修稿时间： | 2006-01-18 |
DYNAMIC ANALYSIS OF PRINTED CIRCUIT BOARD ASSEMBLY SUBJECTED TO DROP IMPACT |
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| LIU Fang,ZHAO Mei,MENG Guang. DYNAMIC ANALYSIS OF PRINTED CIRCUIT BOARD ASSEMBLY SUBJECTED TO DROP IMPACT[J]. Journal of Mechanical Strength, 2007, 29(5): 713-716 |
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| Authors: | LIU Fang ZHAO Mei MENG Guang |
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| Affiliation: | State Key Laboratory of Mechanical system and Vibration, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | Dynamic properties of printed circuit board assembly under drop impact were investigated when viscoelastic property of substrate materials was considered.Main materials of printed circuit board(PCB) substrate were macromolecule resins,which were typical viscoelastic materials.It was necessary for analytical simplicity to assume that PCB was simply supported along its edges.From the point of view of viscoelasticity,dynamic responses of PCB under drop impact were calculated based on plate theory.The results show that the viscoelasticity of PCB and its size have distinct influence on dynamic properties of PCB under board-level drop impact.This not only contributes to understanding real dynamic characteristics of PCB under drop impact and perfecting theory research,but also provides a reference for reliability design and evaluation of PCB. |
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| Keywords: | Printed circuit board Drop impact Dynamics analysis Viscoelasticity |
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