ANSYS在印制电路板组件随机振动分析中的应用  

The Application of ANSYS in Random Vibration Analysis on PCB Components

作　　者：高驰名[1] 刘莹 马建章[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]中国核电工程有限公司河北分公司,河北石家庄050011

出　　处：《无线电工程》2015年第7期95-98,共4页Radio Engineering

摘　　要：基于ANSYS软件建立了印制电路板组件的有限元模型,对印制板组件在基础激励作用下的随机振动响应进行受力分析,并利用后处理的结果对其进行了随机疲劳计算。通过实例介绍了利用ANSYS软件对印制电路板组件进行随机疲劳分析的方法和步骤,找出了组件的应力最大点,计算了该点的功率谱密度及疲劳寿命系数,结果表明结构满足疲劳要求。主要振动响应结果的分析和随机疲劳的计算对印制电路板组件的器件布局具有一定的参考价值,并为印制板组件的可靠性评估提供一定的依据。In this paper,a finite element model for printed circuit board（ PCB） is established on the basis of ANSYS. The random vibration properties of PCB under the effects of basic excitation are analyzed. The fatigue strength of the components in circuit board is calculated based on the random vibration data. The method and steps of random fatigue analysis in ANSYS are introduced,the maximum stress point is found out,and the fatigue coefficient and PSD are calculated. The results indicate that the structure meets the fatigue requirement. The vibration properties and random fatigue analysis are valuable for structural engineering of PCB components and device layout,further more,providing evidence for reliability evaluation for components on PCB.

关 键 词：ANSYS 随机振动 疲劳计算 印制电路板 

分 类 号：TH136[机械工程—机械制造及自动化]