铜基面抗拔摩擦摆支座的力学性能研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (6) : 84-89.

论文

铜基面抗拔摩擦摆支座的力学性能研究

李雄彦1 薛素铎1 潘克君2

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Mechanical property of uplift-restraint friction pendulum bearing Support with Cu-stainless interfaces

Li Xiongyan1 Xue Suduo 1 Pan Kejun 2

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文章历史 +

摘要

为克服现有摩擦摆支座聚四氟乙烯（TEFLON）摩擦面承压能力低和缺乏竖向抗拔功能的不足，对课题组的专利产品—竖向抗拔摩擦摆支座进行了力学性能研究。论文首先介绍了支座的基本构造，并建立了支座的理论模型。为验证理论模型的合理性，设计了竖向承载力3000kN铜基面的摩擦摆支座，并对其进行试验研究。试验测定了竖向抗拔摩擦摆支座滑动面间的摩擦系数，考察了竖向压力和滑移速度对摩擦系数与滞回性能的影响。结果表明：铜基面摩擦摆支座在正弦简谐激励作用下的滞回曲线为平行四边形，与传统摩擦摆支座的滞回曲线具有相同的特征，呈刚塑性；铜基摩擦摆支座的摩擦系数的平均值在0.096-0.109间；滞回曲线的测试结果与数值模拟数据吻合较好，验证了理论模型的合理性。

Abstract

A new type of friction pendulum bearing（FPB） with Cu-stainless steel interfaces and uplift-restraint device, which is enable to overcome the shortages such as low pressure capability for the TEFLON-stainless steel interfaces and unable to control uplift of the in-using FPB, is introduced in the paper. The mechanical property of the new bearing was discussed as well. Firstly, the structural system of the bearing was illustrated, and its theoretical model was developed. Meanwhile, a loading capacity 3000kN FPB was manufactured for mechanical property testing. The experiment focused on hysteretic properties and frictional coefficient, and the influence of the pressure load on the bearing and the sliding velocity of the slider on which was examined in detail. It is shown that the hysteretic loop of the bearing under harmonic excitation shares the parallelogram shape, which is same as the in-using FPB, and the average frictional coefficient betweens 0.096 to 0.109. In addition, there is a good agreement of the hysteretic loops between the experimental result and theoretical model. Therefore, it verified the reasonable of the mechanical model.

导出引用

李雄彦薛素铎潘克君 . 铜基面抗拔摩擦摆支座的力学性能研究[J]. 振动与冲击, 2013, 32(6): 84-89

Li Xiongyan Xue Suduo Pan Kejun . Mechanical property of uplift-restraint friction pendulum bearing Support with Cu-stainless interfaces[J]. Journal of Vibration and Shock, 2013, 32(6): 84-89