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印制板的动态特性对电子设备的可靠性有较大的影响。本文结合计算方法和实验方法对印制板的动态特性进行研究 ,对二种方法所得结果进行比较 ,证实了本文所采用的印制板有限元模型成型技术的有效性。一般地 ,船舶运行时外界环境所引起的激励频率范围为几Hz至几百Hz ,为了避免印制板共振引起的产品失效 ,希望印刷板的基频越高越好。通过计算 ,证明了本文提出的二种结构改进设计方法不同程度地提高了印制板基频
The dynamic characteristics of printed circuit board have a greater impact on the reliability of electronic equipment. In this paper, the calculation method and experimental method are used to study the dynamic characteristics of printed circuit boards. The results of the two methods are compared and the validity of the finite element model forming technology of printed circuit boards used in this paper is verified. Generally, the excitation frequency range caused by external environment during ship operation is several hertz to several hundred hertz. In order to avoid the product failure caused by PCB resonance, the higher the fundamental frequency of printed board is, the better. Through the calculation, it is proved that the two improved design methods proposed in this paper improve the basic frequency