【外文翻译】钣金的电磁成型的建模：最先进的和未来的需要.rar
【外文翻译】钣金的电磁成型的建模：最先进的和未来的需要,摘 要电磁成型过程依赖于一种驱动力，它是由涡流和磁场引起的，而其中的涡流和磁场是在工件中由一个附近线圈中的瞬态电流产生的。用这种成型方式可达到的高变形率提高了材料的成型性能，如铝。而且，和成型模具接触的动力系统可以消除回弹，一种意想不到的效果在其它的成型方法如冲压中是有问题的。可以充分模拟成形过程，而且可以被用做设计成...
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摘 要
电磁成型过程依赖于一种驱动力，它是由涡流和磁场引起的，而其中的涡流和磁场是在工件中由一个附近线圈中的瞬态电流产生的。用这种成型方式可达到的高变形率提高了材料的成型性能，如铝。而且，和成型模具接触的动力系统可以消除回弹，一种意想不到的效果在其它的成型方法如冲压中是有问题的。可以充分模拟成形过程，而且可以被用做设计成型系统的待定的数值模拟功能是目前电磁成型技术的一项进步。这样的功能都必须建立在这样物理模型，这些物理模型校正了电磁，变形和变形工件的热响应以及其他系统结构之间的强耦合。本文简要阐述了电磁成型方法和它的应用以及现有模型的回顾。此外，概述了一个能够进一步发展成以过程仿真为目的数学框架。最后，本文讨论了来自推进电磁成型技术的挑战。
关键词：电磁成型；麦克斯韦方程组的物质形式；电磁成型的可塑性；钣金成型。
Modeling of the electromagnetic forming of sheet metals:state-of-the-art and future needs
Abstract
The electromagnetic forming (EMF) process relies on a driving force that is induced by eddy current and magnetic field, both of which are generated in the workpiece by a transient current in a nearby coil. The high deformation rates achievable using this forming method enhances the formability of materials such as aluminum. Also, the dynamics of contact with the forming die can eliminate springback,
an undesired effect that can be problematic in other forming techniques such as stamping. The advancement of the EMF technology
is currently awaiting rigorous numerical modeling capabilities that can adequately simulate the forming process and be used to design the forming system. Such capabilities must be based on physical models that address the strong coupling between the electromagnetic, deformation and thermal response of the deforming workpiece and other system structure. In this paper, a brief exposition of the EMF method and its applications and a review of the existing models are given. In addition, a mathematical framework, which can be further developed numerically for the purpose of process simulation, is outlined. Finally, the paper discusses the challenges to advancing the EMF
technology.
Keywords: Electromagnetic forming; Material form of Maxwell’s equations; Electro-magneto-plasticity; Sheet metal forming
电磁成型过程依赖于一种驱动力，它是由涡流和磁场引起的，而其中的涡流和磁场是在工件中由一个附近线圈中的瞬态电流产生的。用这种成型方式可达到的高变形率提高了材料的成型性能，如铝。而且，和成型模具接触的动力系统可以消除回弹，一种意想不到的效果在其它的成型方法如冲压中是有问题的。可以充分模拟成形过程，而且可以被用做设计成型系统的待定的数值模拟功能是目前电磁成型技术的一项进步。这样的功能都必须建立在这样物理模型，这些物理模型校正了电磁，变形和变形工件的热响应以及其他系统结构之间的强耦合。本文简要阐述了电磁成型方法和它的应用以及现有模型的回顾。此外，概述了一个能够进一步发展成以过程仿真为目的数学框架。最后，本文讨论了来自推进电磁成型技术的挑战。
关键词：电磁成型；麦克斯韦方程组的物质形式；电磁成型的可塑性；钣金成型。
Modeling of the electromagnetic forming of sheet metals:state-of-the-art and future needs
Abstract
The electromagnetic forming (EMF) process relies on a driving force that is induced by eddy current and magnetic field, both of which are generated in the workpiece by a transient current in a nearby coil. The high deformation rates achievable using this forming method enhances the formability of materials such as aluminum. Also, the dynamics of contact with the forming die can eliminate springback,
an undesired effect that can be problematic in other forming techniques such as stamping. The advancement of the EMF technology
is currently awaiting rigorous numerical modeling capabilities that can adequately simulate the forming process and be used to design the forming system. Such capabilities must be based on physical models that address the strong coupling between the electromagnetic, deformation and thermal response of the deforming workpiece and other system structure. In this paper, a brief exposition of the EMF method and its applications and a review of the existing models are given. In addition, a mathematical framework, which can be further developed numerically for the purpose of process simulation, is outlined. Finally, the paper discusses the challenges to advancing the EMF
technology.
Keywords: Electromagnetic forming; Material form of Maxwell’s equations; Electro-magneto-plasticity; Sheet metal forming
