工艺与制造英文2023
电动转子绕线间毛细自发上升的多物理场耦合仿真研究
Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires
Amélie Moisy, Sébastien Comas-Cardona, Nicolas Désilles, Pascal Genevée, J. Kolehmainen · Institut de Recherche en Génie Civil et Mécanique
摘要整理
引言:转子是电动机的活动部件。绕线转子主要由钢铁芯和缠绕其上的绝缘铜线组成,绕组随后浸入液态丙烯酸酯基热固性树脂浴中,以确保电动机的性能和耐久性。树脂在铜线间的浸渍过程在受控温度条件下进行,以促进树脂流动和固化。该过程不涉及加压,这表明除粘性效应外,毛细力和重力在浸渍过程中起重要作用。方法:本研究的最终目标是评估浸渍质量。这需要表征和仿真一个多材料、多物理场耦合过程,其中热传递、聚合反应动力学和树脂流动强耦合。本文建立了单向热调控毛细上升装置的完全耦合宏观多物理场仿真模型。讨论:所建立的模型与实验数据具有良好的一致性,能够解释在120°C处观察到的工况突变现象,该现象可归因于聚合反应和温度梯度对流体动力学的影响。该研究对电动机绕组树脂浸渍工艺的优化和质量控制具有重要指导意义。
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