Abstract:A new joint design method of dynamics and circuit for PCB was presented, which can improve the anti-vibration performance of PCB on the premise of satisfying the circuit design, in order to solve the problem that the vibration of PCB is easily affected by vibration in the process of transportation and use.Firstly, based on the dynamic analysis of PCB, the modal sensitive region of the circuit board was determined, and the mounting position of the damper was determined by the harmonic response analysis.Then the energy dissipation of the particle system was calculated by the discrete element method.According to the design of the particle damper model, the particle size, filling rate and other parameters were optimized, and the installation scheme of the particle damper on the PCB was determined.On this basis, the design of the whole circuit system was completed.Through the combination of simulation and experiment, it was verified that the installation of particle damper in sensitive areas can increase the vibration reduction effect of PCB more than 50%.This joint design method is of great significance for improving the anti-vibration characteristics of the circuit board.
肖望强1,余少炜1,林昌明1,刘利杰2. 基于颗粒阻尼的PCB动力学与电路联合设计研究[J]. 振动与冲击, 2019, 38(10): 124-132.
XIAO Wangqiang1,YU Shaowei1,LIN Changming1,LIU Lijie2. Research on joint design of dynamics and circuit for pcb based on particle damping. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(10): 124-132.
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