在简化电磁力的基础上,根据薄壁壳屈服准则,对管坯在电磁力作用下的变形过程进行了理论分析.在理想刚塑性、双线性假设的基础上分别得出位移、速度、加速度的解析表达式.前者可直观地反映成形系统各个因素对成形过程的影响,为工程应用提供参考,但在磁压力幅值较小、持续时间较长时误差较大;后者表达式相对复杂,但结果更为合理,有助于深入理解电磁胀形的变形机理.
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