Practical electrical contact edges are irregular either macroscopically due to fabrication errors or microscopically due to the nature of edge or surface roughness. However, electrical contact models typically assume ideal and regular contact geometries, where geometrical effects of the irregular electrode edges are not well characterized. This paper studies current crowding and spreading resistance of electrical contacts with irregular contact edges. Using finite element method based numerical simulations, we investigate the scaling of total resistance, spreading resistance, potential drop and current distribution for electrical contacts of tilted contact edges, with various electrode lengths ##IMG## [http://ej.iop.org/images/0022-3727/53/48/485303/dabadc3ieqn1.gif] {$a$} and edge angles ##IMG## [http://ej.iop.org/images/0022-3727/53/48/485303/dabadc3ieqn2.gif] {$\theta $} . It is found that as the contact edge angle ##IMG##

中文翻译：

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具有不规则触点边缘的电触点的电流拥挤和扩展电阻

实际的电接触边缘由于制造误差而在宏观上是不规则的，或者由于边缘或表面粗糙度的性质而在微观上是不规则的。然而，电接触模型通常假设理想的和规则的接触几何形状，其中不规则电极边缘的几何效应无法很好地表征。本文研究了具有不规则接触边缘的电触点的当前拥挤和扩展电阻。使用基于有限元方法的数值模拟，我们研究了具有各种电极长度的倾斜触点边缘电触点的总电阻，散布电阻，电势下降和电流分布的比例。## IMG ## [http：//ej.iop。 org / images / 0022-3727 / 53/48/485303 / dabadc3ieqn1.gif] {$ a $}和边角## IMG ## [http：//ej.iop。org / images / 0022-3727 / 53/48/485303 / dabadc3ieqn2.gif] {$ \ theta $}。发现作为接触边缘角## IMG ##