计算机与现代化 ›› 2014, Vol. 0 ›› Issue (1): 214-218.

• 应用与开发 • 上一篇    下一篇

基于模态分析的印制电路板抗振优化设计

  

  1. 华北计算技术研究所,北京100083
  • 收稿日期:2013-09-13 出版日期:2014-01-20 发布日期:2014-02-10
  • 作者简介:陈康(1987-),男,河南淅川人,华北计算技术研究所硕士研究生,研究方向:计算机硬件设计; 张雷(1982-),男,工程师,硕士,研究方向:计算机硬件设计; 胡晓吉(1962-),男,辽宁葫芦岛人,正研级高级工程师,硕士,研究方向:计算机抗恶劣环境技术。

Anti-vibration Optimization Design of Printed Circuit Board Based on Modal Analysis

  1. North China Institute of Computing Technology, Beijing 100083, China
  • Received:2013-09-13 Online:2014-01-20 Published:2014-02-10

摘要: 保证印制电路板足够高的固有频率可有效提高印制电路板的抗振能力。以3U和6U两种典型尺寸的印制电路板为例,分别建立有限元模型,通过模态分析得到其各阶固有频率。针对印制电路板固有频率偏低的问题,分别对3U和6U板卡设计优化安装方案。模态分析表明,这些优化安装方案易于实现,可显著提高这2种板卡的固有频率,增强抗振能力,提高可靠性,同时考虑了电路设计的需要。

关键词:  , 模态分析, 印制电路板, 有限元方法, 固有频率, 可靠性

Abstract: To ensure a sufficiently high natural frequency of printed circuit board can effectively improve the anti-vibration capability of the printed circuit board for. Two typical sizes of printed circuit board(PCB) which are 3U and 6U are taken for example, their finite element models are established, and their natural frequencies are obtained by modal analysis. Optimal installation solutions are designed for 3U and 6U boards to solve their problems of low natural frequencies. The results show that the optimal installation solutions are easy to implement, they can significantly increase the natural frequencies for 3U and 6U boards and enhance the anti-vibration reliability, at the same time the installation solutions meet the needs of circuit design.

Key words:  modal analysis, PCB, finite element method, natural frequency, reliability