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Influence of sliding friction on leveling force of superelastic NiTi arch wire: A computational analysis

机译:滑动摩擦对超弹性NITI拱线测量力的影响:计算分析

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This study investigated the influence of sliding friction toward the effective force of superelastic NiTi arch wire applied in orthodontic bracing for tooth leveling. A three-dimensional finite-element model integrated with superelastic subroutine and contact interaction was used to predict the contribution of friction on force-deflection curve of NiTi wire in three brackets bending configuration. It was found that the friction between the wire and the bracket increased proportionally as a function of wire deflection, thus transforming the constant force characteristic of NiTi material into a slope. The highest magnitude of sliding friction was measured to be 3.1 N and 2.2 N with respect to the activation and deactivation of the arch wire.
机译:本研究调查了滑动摩擦朝向牙齿平整牙齿平整矫正支撑术中的超弹性NITI拱线的有效力的影响。使用具有超弹性子程序和接触相互作用的三维有限元模型来预测三个支架弯曲配置中摩擦摩擦对镍线力偏转曲线的贡献。发现导线和支架之间的摩擦与线偏转的函数成比例地增加,从而将NITI材料的恒定力特性变为斜坡。相对于拱线的激活和停用,测量滑动摩擦的最高幅度为3.1n和2.2n。

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