电磁激振器圆台橡胶弹簧的有限元分析

The Finite Element Method Analysis to Cone Frustum Rubber Spring of Electromagnetic Vibration Exciter

电磁激振器是一种非接触式激振器,对试件提供激振力。冲锤是由通电线圈产生的电磁力所驱动。在工作过程中,冲锤的冲击将产生很大的冲击力,在高频冲击下,冲锤将发生变形,甚至很快发生破坏,冲锤的使用寿命大大减小,并影响到电磁激振器的整体工作性能。在冲击系统中设置一个参数合理的圆台橡胶弹簧,可以解决这一工程实践问题。通过电磁激振器圆台橡胶弹簧有限元模型的分析,能够得到橡胶弹簧运用后产生的应力图,证明运用橡胶弹簧能够减小电磁激振器冲锤的应力,为工程应用打下理论基础。

Electromagnetic vibration exciter is a kind of device which provides vibrational source without contacting.The hammer is driven by electromagnetic force produced by the loop which is electrifying.When the device works,the hammer has a large impacting force.The hammer will be destroyed by high-frequency impacting.The life of the hammer will be reduced quickly.And these will affect the unitary capability of the device.In order to solve this engineering problem,a rubber spring with appropriate parameter should be set into the device.Through the finite element method analysis to cone frustum rubber spring of electromagnetic vibration exciter,this paper aimed at getting the stress pattern produced by rubber spring applied.Applying rubber spring could decrease the stress generated by Electromagnetic vibration exciter＇s hammer,which lays the theoretical foundation of engineer application.