拉力测试过程中引线断裂机理的研究

为更好理解键合引线拉力测试时的受力薄弱环节以及各点的受力情况,为产品可靠性评价及预测提供理论参考,利用有限元分析方法对金丝的拉力测试过程进行计算机模拟。建立模型后通过单元网格划分,对各节点的受力情况进行分析和计算,得到单元各节点的应力值以及模型受力云图。通过最大应力值点以及模型受力云图与实际测试情况的比较,结果表明,模型应力集中区域与试样实际断裂区域相吻合。

Study of Wire Crack in Tensile Tests

The analysis of wire tensile process conduced to looking into the weak points and conditions of each point upon which force is being exerted on the gold wire bonding.It could be good theoretical reference for assessing and predicting the reliability of devices.In this article,finite element analysis method was used to simulate the tensile process of wire through programming on the computer.The force on each node was analyzed and calculated through meshing the model into elements and applying constraints and...