Research on Bending of Epoxy Plate for Fixing Coils in Electromagnetic Repulsion Mechanism

DONG Runpeng; ZHUANG Jinwu; WU Jin; YUAN Zhifang; HU Xinkai

doi:10.13296/j.1001-1609.hva.2020.10.024

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Research on Bending of Epoxy Plate for Fixing Coils in Electromagnetic Repulsion Mechanism

更新时间：2025-04-26

- Research on Bending of Epoxy Plate for Fixing Coils in Electromagnetic Repulsion Mechanism
- High VoltageApparatus Vol. 56, Issue 10, Pages: 147-154(2020)
- 作者机构：
  
  海军工程大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.10.024
  CLC： TM561
- Published：2020
- 稿件说明：
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[1]董润鹏,庄劲武,武瑾,袁志方,胡鑫凯.斥力机构中固定线圈的环氧板材弯折问题研究[J].高压电器,2020,56(10):147-154.

DONG Runpeng, ZHUANG Jinwu, WU Jin, et al. Research on Bending of Epoxy Plate for Fixing Coils in Electromagnetic Repulsion Mechanism[J]. High voltageapparatus, 2020, 56(10): 147-154.
[1]董润鹏,庄劲武,武瑾,袁志方,胡鑫凯.斥力机构中固定线圈的环氧板材弯折问题研究[J].高压电器,2020,56(10):147-154. DOI： 10.13296/j.1001-1609.hva.2020.10.024.

DONG Runpeng, ZHUANG Jinwu, WU Jin, et al. Research on Bending of Epoxy Plate for Fixing Coils in Electromagnetic Repulsion Mechanism[J]. High voltageapparatus, 2020, 56(10): 147-154. DOI： 10.13296/j.1001-1609.hva.2020.10.024.

摘要

文中针对高速电磁机构中固定斥力线圈的环氧板材在通过多次大电流冲击后出现的弯折或开裂这一问题

基于有限元方法

将电磁场与结构力场进行耦合求解

解释了环氧板材的弯折原因

讨论了相关结构尺寸对板材内应力分布的影响规律;根据影响规律对斥力线圈的固定形式进行改进

提出采用圆周约束替代原四角约束

并讨论了在环氧板材下端增加经过径向切割的金属板的可行性。最后

设计两组工程样机

进行了大电流下环氧板材冲击实验及圆周约束形式的机构耐受实验。仿真及实验结果表明:相比于四角固定形式

圆周约束的环氧板材内部应力分布更加均匀

且在相似应力分布下板材的结构尺寸更小。

Abstract

In this paper

the electromagnetic field and structural field are coupled in frequency domain based on finite element method（FEM）to explain the phenomena that epoxy plate which is fixed coils in high-speed electromagnetic repulsion mechanism will bend or fracture after passing through high current with high frequency several times

besides that the influence of relevant structural dimensions on the stress distribution in epoxy plate is discussed. According to the influence law

the constraint form of coils is improved

and the circular constraint form replace the original four corner constraint proposed

in addition the feasibility of adding radial cutting metal plate to the lower end of epoxy plate is discussed. Finally

two prototypes were designed and the impact test under high current and the mechanism withstand test of new constraint form were carried out. The FEM and experimental results show that the stress distribution in epoxy plate with circular constraint is more uniform compared with corner constraint. Moreover

under similar stress distribution

the structural size of the plate with circular constraint is smaller.

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