六分裂阻尼弹簧相间间隔棒的试验与模拟

针对专利产品新型六分裂阻尼弹簧相间间隔棒,试验研究两相六分裂导线使用该相间间隔棒在微风振动时及不同风速加载条件下的稳定后振幅及夹口处动弯应变情况,并运用有限元软件ANSYS建立两相六分裂导线的有限元模型,对其进行数值模拟。研究结果表明,使用新型阻尼弹簧相间间隔棒的导线系统在不同风荷载作用下的稳定后振幅及夹口处动弯应变皆小于采用传统相间间隔棒的情况,具有良好的减振能力;阻尼弹簧相间间隔棒的性能可以通过调节弹簧刚度及重球质量而改变;采用杆单元LINK10、阻尼器单元COMBIN14、质量块单元MASS21等进行有限元建模,可以得到较为理想的结果,数值分析的结果与试验结果能够较好地吻合。

Test and Simulation on Vibration Attenuation Effects of Phase-to-Phase Spacers with Damping Springs for Six-Bundle Conductors

Stabilized amplitude and dynamic bending strain of two-phase six-multiple conductors with new patented phase-to-phase spacers with damping springs in aeolian vibration under different wind loads, were studied. Finite element software ANSYS was used to establish the finite element model of the two-phase six-multiple conductors for numerical simulation. Research results show that by using the new phase-to-phase spacers with damping springs, the conductor system’s stabilized amplitude and dynamic bending strain under different wind loads are smaller than that with traditional phase-to-phase spacers, indicating excellent vibration attenuation and energy dissipation capability. The performance of the phase-to-phase spacers with damping springs can be changed by adjusting the spring stiffness and heavy-ball mass. Results of numerical analysis are coincident with the test results and would be quite satisfactory when LINK10, COMBIN14, MASS21 and other such units are adopted to establish the product’s finite element model.