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摘要：简述电压跌落模拟器特性，校准和参数计算。
Abstract: Brief voltage drop simulator characteristics, calibration and parameter calculation.
以某大跨越输电塔为例，采用有限元方法建立了塔线模型，并对导线的跌落过程进行模拟。
Taking a long-span transmission tower as example, finite element method was employed to construct a tower-line model and simulate the conduct dropping process.
为了预测跌落碰撞下球栅阵列(BGA)封装中无铅焊点的失效，采用ABAQUS软件来模拟跌落碰撞过程中焊点的应力分布。
In order to predict failure location of BGA lead-free solder joints under a drop impact, ABAQUS software is used to analysis stress distribution of the solder joints.
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