用于磁压剪技术的10 T准静态磁场发生器

基于理论分析和数值模拟，建立了一种用于磁驱动压剪加载中产生纯剪切力的准静态磁场发生器，由4台0.5 mF/15 kV的储能电容器并联而成，通过15 kV/30 kA的半导体硅堆开关，向一对磁体线圈放电，进行模拟分析和实验测试。装置在充电9 kV时，在样品区域获得了上升时间1.34 ms的10 T准静态磁场。测试和分析结果表明在半径7 mm区域内磁场分布不均匀性小于2%，满足磁压剪实验要求。

10 T quasi-static magnetic field generator for magnetically applied pressure-shear experiment

The applications of the magnetic field are favored by a majority of researchers. In this paper, based on theoretical analysis and numerical simulation, a quasi-static magnetic field generator for magnetically applied pressure-shear loading to generate pure shear stress is developed and established. This device consists of four 0.5 mF/15 kV storage capacitors in parallel, which are discharged to a pair magnet coil placed upper and down magnetically driven loading electrode via a 15 kV/30 kA semiconductor silicon stack switch. When the charging voltage is 9 kV, a 10 T quasi-static magnetic field with a rise time of 1.34 ms is obtained in the sample area. The experimental testing and simulation results show that the uniformity distribution of the magnetic field is less than 2% across 7mm radius, which can meet the requirements of the technique of magnetically applied pressure-shear.