磁芯材料对电磁阀静态电磁力的影响研究

利用电磁场有限元分析软件JMAG Designer建立了电磁阀有限元仿真模型.经与试验数据对比,该模型的静态电磁力的平均误差为4.8％,仿真模型的正确性得到验证.基于该仿真模型对比分析了在不同工作气隙和电流条件下,16MnCr5和20CrMn两种磁芯材料对电磁阀磁感应强度的分布以及静态电磁力大小的影响规律.研究结果表明:磁芯材料对电磁阀的性能有较大的影响,不同磁芯材料的电磁阀在相同工况下衔铁表面产生的磁感应强度不同,进而导致电磁阀产生的静态电磁力不同.相比之下,以16MnCr5作为磁芯材料的电磁阀,其衔铁表面产生的磁感应强度更大,从而使得电磁阀产生静态电磁力更大.

Research on the Influence of Magnetic Core Material onStatic Electromagnetic Force of Solenoid Valve

The finite element simulation model of solenoid valve was established by using the electromagnetic field finite element analysis software JMAG Designer. By comparing with the experimental data, the average error of static electromagnetic force was 4.8%, which verified the correctness of the simulation model. The influence of 16MnCr5 and 20CrMn core materials on the distribution of magnetic induction intensity and static electromagnetic force of solenoid valve under different working air gap and current conditions was compared and analyzed. The results show that the magnetic core material has a great influence on the performance of the solenoid valve. Under the same working condition, the magnetic induction intensity generated by the armature surface of the solenoid valve with different core materials is different, which leads to the different static electromagnetic force produced by the solenoid valve. By comparison, the armature surface of the solenoid valve with 16MnCr5 as the core material can produce greater magnetic induction strength, which makes the solenoid valve produce more static electromagnetic force.