Vibrational Control of Electric Components on the Package of Circuit Board
Date Issued
2006
Date
2006
Author(s)
Yu, Tsung-Wei
DOI
zh-TW
Abstract
This thesis develops the numerical model to probe the dynamic response of a capacitor subjected to a shock wave which is based on the Military Standards. Finite element method (LS-DYNA) is utilized to analyze the dynamic behavior and vibrational control of the electronic components.
The accuracy of simulation is verified by the experiments of modal testing of an aluminum bar and the impact of a shock generator. From the results of simulations, the vibrational resistance of the capacitor follows the increases of the rigidity of the structure. Avoiding the resonant frequency of the system is a significant concept of the design of vibrational control.
The simulation results show that there are two ways to reduce shock energy: one way is to increase the rigidity of the system, and the other way is to design the shock protection structure. Different material properties and directions of shock waves result in various vibrational different resistances of the structure. Resonant frequency of the electronic component may be induced by the transmission of the energy.
Subjects
LS-DYNA
減震設計
震動分析
design of vibrational control
analysis of vibration
Type
thesis
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