自复位转动摩擦阻尼器弯矩-转角恢复力性能研究

史庆轩1,2,3,王朴臻1,戎翀2,3,王朋1,2,3,王斌1,2,3

振动与冲击 ›› 2024, Vol. 43 ›› Issue (9) : 281-290.

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (9) : 281-290.
论文

自复位转动摩擦阻尼器弯矩-转角恢复力性能研究

  • 史庆轩1,2,3,王朴臻1,戎翀2,3,王朋1,2,3,王斌1,2,3
作者信息 +

Moment-rotating angle restoring force performance of SCRF damper

  • SHI Qingxuan1,2,3, WANG Puzhen1, RONG Chong2,3, WANG Peng1,2,3, WANG Bin1,2,3
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文章历史 +

摘要

为了满足减震结构对可恢复功能的要求,针对传统摩擦阻尼器不具备自复位能力震后存在较大残余变形的问题,提出了一种基于形状记忆合金的自复位转动摩擦阻尼器,由摩擦耗能装置和形状记忆合金自复位装置组合而成。介绍了该SCRF阻尼器的构造形式、工作原理,通过理论推导建立了SCRF阻尼器的弯矩-转角恢复力模型,通过ABAQUS软件有限元数值分析结果对弯矩-转角恢复力模型进行了验证,分析了低周往复荷载作用下SCRF阻尼器的滞回性能,并进行了参数分析。结果表明:有限元计算结果与阻尼器恢复力模型结果吻合良好;提高接触面间的摩擦系数与斜面高度可以提高阻尼器的最大承载力、耗能能力、有效刚度,但是超过一定限值的斜面高度会降低阻尼器的自复位能力;施加SMA螺栓预紧力可以提高阻尼器的摩擦启动弯矩,对于阻尼器的耗能能力与最大承载力影响不大。

Abstract

To meet the requirements of energy dissipation structures for the resilience performance, a self-centering rotary friction (SCRF) damper based on shape memory alloy is proposed to address the problem that traditional friction dampers do not have self-centering capability and have a large residual deformation after the earthquake. SCRF is a combination of a friction energy dissipation device and shape memory alloy (SMA) self-centering device. The construction form and working mechanism of the SCRF damper are introduced, the moment-rotation hysteretic model of the SCRF damper is established through theoretical derivation, the moment-rotation hysteretic model is verified by the numerical simulation of ABAQUS. The hysteresis performance of SCRF under low cycle hysteresis load is analyzed, and the parameters are analyzed. The results indicate that the theoretical hysteresis model was consistent with the numerical simulations. Increasing the friction coefficient and slope height between the contact surfaces can improve the maximum bearing capacity, energy dissipation capacity and effective stiffness of damper, however, the height of the slant surface that exceeds a certain limit will reduce the self-centering ability of damper. The preload of SMA bolts can increase the friction initiation moment of the damper, which has little effect on the energy dissipation capacity and the maximum load capacity of the damper.

关键词

SMA / SCRF阻尼器 / 弯矩-转角恢复力模型 / 数值模拟 / 参数分析

Key words

Shape memory alloy / Self-centering rotational friction damper / Moment-rotation hysteretic model;Numerical simulation / Parametric analysis

引用本文

导出引用
史庆轩1,2,3,王朴臻1,戎翀2,3,王朋1,2,3,王斌1,2,3. 自复位转动摩擦阻尼器弯矩-转角恢复力性能研究[J]. 振动与冲击, 2024, 43(9): 281-290
SHI Qingxuan1,2,3, WANG Puzhen1, RONG Chong2,3, WANG Peng1,2,3, WANG Bin1,2,3. Moment-rotating angle restoring force performance of SCRF damper[J]. Journal of Vibration and Shock, 2024, 43(9): 281-290

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