【摘要】 电磁成形是在航空、航天等领域中得到应用的一种先进制造技术,理论研究涉及塑性动力学及电磁学。成形线圈设计是电磁成形工艺的关键技术之一,而设计线圈的理论依据之一是线圈受力分析。文章采用数值模拟的方法,研究了轴对称线圈胀形时的磁场,得到了成形瞬间螺线管线圈和阶梯形线圈的受力分布。采用代数解析的方法,计算了轴对称线圈所受到的磁场力的径向分量。理论研究表明,线圈受到的力是体积力,线圈的形状、结构参数和相对安装位置对线圈的受力影响很大,解析法可定性分析线圈径向受力。更多还原

【Abstract】 Electromagnetic forming is a kind of advanced forming technology which is applied in the fields of aviation,space and so on,and the theory research is related to electromagnetics and plasticity dynamics.The design of the forming coil is one of the key technologies in electromagnetic forming,and the magnetic pressure analysis of the forming coil is partly based on the design of the forming coil.In this paper,the magnetic field of tube electromagnetic bulging with axisymmetric coil is investigated by numerical simulation method.Distribution of magnetic pressure of solenoid coil and echelon coil can be obtained during the forming.The radial magnetic pressure of axisymmetric coil can be calculated by algebraic analysis.The theory research indicates that the structural parameters of the coil and the workpiece and the relative position between them are important factors for the magnetic pressure distribution of the forming coil.The radial magnetic pressure of axisymmetric coil can be analyzed qualitatively by analysis.更多还原