新型自复位摩擦耗能阻尼器的设计及数值模拟分析

常召群; 刘伯权; 韩萌; 白涛; 邢国华; 王双兵

doi:10.13204/j.gyjzG20080402

新型自复位摩擦耗能阻尼器的设计及数值模拟分析

doi: 10.13204/j.gyjzG20080402

长安大学建筑工程学院, 西安 710061

基金项目:

国家自然科学基金项目（51578077）；陕西省技术创新引导专项（基金）项目（2019CGHJ-06）；新疆自治区区域协同创新专项项目（2019E0231）；中央高校基本科研业务费资助项目（300102288302，300102288710）。

详细信息

作者简介:
常召群,男,1992年出生,博士研究生。

通讯作者:
邢国华,ghxing@chd.edu.cn。

计量
- 文章访问数: 96
- HTML全文浏览量: 6
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-04
- 网络出版日期: 2022-01-11

DESIGN AND NUMERICAL ANALYSIS OF AN INNOVATIVE SELF-CENTERING FRICTION DAMPER

School of Civil Engineering, Chang'an University, Xi'an 710061, China

摘要

摘要: 利用形状记忆合金（SMA）的超弹性性能设计出了一种新型的自复位摩擦耗能阻尼器，该阻尼器主要由基于大直径SMA棒的自复位装置和摩擦耗能装置两大部分组成，其构造简单、传力明确。为了验证该阻尼器的有效性及可靠性，首先在常温下对大直径SMA棒（10 mm）开展滞回性能试验研究，其次利用ABAQUS数值分析软件建立阻尼器的有限元数值模型，分析不同位移幅值、摩擦力、SMA预拉力等变量下，阻尼器等效刚度、单位循环耗能量、等效阻尼比和残余变形比等力学参数的变化规律。研究结果表明：该新型自复位摩擦耗能阻尼器具有良好的自复位能力和耗能能力，可通过改变摩擦力和SMA预拉力以调控阻尼器残余变形的大小。
- 形状记忆合金棒 /
- 超弹性 /
- 自复位摩擦阻尼器 /
- 残余变形 /
- 数值模拟
Abstract: An innovative self-centering friction damper was proposed by utilizing the superelastic property of shape-memory alloy (SMA). The damper with a simple structural configuration and clear load-transfer mechanism, consisted of the self-centering device based on large size SMA bars and frictional energy-dissipation devices. To verify the effectiveness and reliability, the experiment of SMA bars with a diameter of 10 mm subjected to cyclic loads was conducted. Then the numerical model of the damper was constructed by finite element analysis software ABAQUS. The change laws of equivalent stiffness, the energy-dissipation per cycle, the equivalent damping ratio and the residual deformation ratio of the damper were discussed in the different displacement amplitudes, friction and prestressing forces of SMA bars. The simulation results showed that the innovative friction damper exhibited a good self-centering and energy-dissipation capability. The residual deformation of the damper was controlled by the friction and the prestressing force of SMA bars.
- shape-memory alloy bar /
- superelasticity /
- self-centering friction damper /
- residual displacement /
- numerical simulation

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参考文献(15)

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