Abstract
This paper presents a new approach to evaluating the electrostatic/magnetic adhesion force between two adjacent objects separated by a thin gap. In this approach, instead of generating mesh for the gap, a contact boundary is introduced in the finite element modeling to obtain a reasonable field distribution; then the field in the gap is approximated based on the continuity condition at their interface, so that the adhesion force can be properly calculated. Moreover, a simple equivalent circuit model is introduced to explain how the thin gap influences the adhesion force significantly. Numerical experiments are given to demonstrate the validity of the proposed method and the significance of the thin gap.
摘要
本文提出了一种新的方法计算由薄间隙分隔的两个相邻物体之间的静电/磁吸附力。在该方法中，无需为间隙生成网格，通过在有限元模型中引入接触边界，获得合理的场分布；然后根据界面处的连续性条件来预测间隙中的场，从而合理地计算出吸附力。此外，本文引入了一个简单的等效电路模型来解释薄间隙如何显著影响吸附力。数值实验验证了所提方法的有效性以及薄间隙的重要性。
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the National Natural Science Foundation of China (No. 11272074), and the National Science and Technology Major Project (No. 2011ZX02403-00)
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Jiang, P., Li, Z., Zhang, L. et al. Calculation of Electrostatic/Magnetic Adhesion Force Between Adjacent Objects Considering Thin Gap Effect. J. Shanghai Jiaotong Univ. (Sci.) 28, 213–219 (2023). https://doi.org/10.1007/s12204-021-2317-1
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DOI: https://doi.org/10.1007/s12204-021-2317-1