螺纹剪切式碰撞吸能系统快速推进装置研究

为解决螺纹剪切式汽车碰撞吸能系统CST(Cutting the Screw Thread)的快速推进问题,基于电磁发射理论,创新设计出一种CST快速推进装置,利用有限元方法确定了CST快速推进装置工作过程中的磁场分布及电磁力大小,分析发现,由于螺纹杆的存在,CST快速推进装置的磁力线分布不均匀,线圈内部的磁力线都集中于螺纹杆之中,螺纹杆的前端以及靠近线圈左端的螺纹杆表面磁力线比较密集,且大部分磁力线通过螺纹杆的螺纹,表明CST快速推进装置工作过程中的大部分电磁力集中在这两处的螺纹上.可见,本文创新设计的CST快速推进装置能够取得预期的快速推进效果.

Research on Rapid Propulsion Derice for Energy Absorbtion System With Cutting Screw Thread duning Collision

Based on the electromagnetic theory,the authors innovatively work out a raped propulsion device to solve the swift propulsion question of CST system.Using the finite method,the distribution of the magnetic field and the measurement of electromagnetic force are obtained.After analyzing,the author also finds out that,owing to the screw rod,lines of magnetic force in the rapid propulsion davice of CST are not well-distributed.Lines inside the coil are centralized in the screw rod.and there are two areas where the lines are intensive,namely right-hand end of the screw thread rod and near the left-hand end of coil.Actually,most of them get through the screw rod.All above indicates that the electromagnetic force is mainly centralized on these two areas of the Screw rod.In short,the rapid propulsion device of CST,which the authors innovatively designed,can achieve the prospective effect of propelling rapidly.