无线随钻测斜仪减振器减振性能分析

无线随钻测斜仪中减振器减振性能的优劣直接影响着仪器测井性能、稳定性以及寿命。通过建立有限元模型进行模态分析得到减振器的固有频率,通过非线性分析得到减振器的等效弹簧刚度;进一步将等效弹簧刚度导入ADAMS中建立虚拟样机,分析得到减振器对于0~28g、0~200 Hz连续载荷以及0~53g、5ms的冲击载荷具有很好的减振效果。该研究分析方法为减振器设计提供方法参考。

Analysis of Wireless MWD Shock Absorber Vibration Damping Performance

Wireless MWD shock absorber damping performance will directly affect the well logging instrument performance ,stability and longevity .In this paper ,the finite element model is established ,and the modal analysis is performed to get the natural frequency of the shock absorber . The equivalent spring stiffness of the damper is obtained by nonlinear analysis . Further ,the equivalent spring stiffness is imported into ADAMS to establish a virtual prototype analysis to obtain the shock absorber for 0~28 g ,0~200 Hz continuous load and 0~53 g ,5 ms shock load with good damping effect .This method can provide reference for the design of shock absorber .