[1]左晓宝,等.一种超弹性SMA复合阻尼器的设计与试验[J].东南大学学报(自然科学版),2004,34(4):459-463.[doi:10.3969/j.issn.1001-0505.2004.04.009]
　Zuo Xiaobao,Li Aiqun,et al.Design and experimental investigation of superelastic SMA damper[J].Journal of Southeast University (Natural Science Edition),2004,34(4):459-463.[doi:10.3969/j.issn.1001-0505.2004.04.009]
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一种超弹性SMA复合阻尼器的设计与试验()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第4期
页码:
459-463
栏目:
土木工程
出版日期:
2004-07-20

文章信息/Info

Title:
Design and experimental investigation of superelastic SMA damper
作者:
左晓宝1;  2;  李爱群1;  倪立峰1;  陈庆福3
1 东南大学土木工程学院, 南京 210096; 2 南京理工大学理学院, 南京 210094; 3 江苏法尔胜集团公司, 江阴 214433)
Author(s):
Zuo Xiaobao1;  2;  Li Aiqun1;  Ni Lifeng1;  Chen Qingfu3
1 College of Civil Engineering, Southeast University, Nanjing 210096, China
2 School of Science, Nanjing University of Science and Technology, Nanjing 210094, China
3 Jiangsu Fasten Group Company, Jiangyin 214433,
关键词:
形状记忆合金;  超弹性;  阻尼器;  力学性能
Keywords:
shape memory alloy;  superelasticity;  damper;  mechanical behavior
分类号:
TU311.3
DOI:
10.3969/j.issn.1001-0505.2004.04.009
摘要:
根据形状记忆合金(SMA)的超弹性特性,设计、制造了一种SMA复合摩擦阻尼器,该阻尼器利用SMA超弹性阻尼与SMA丝的约束作用使阻尼器内部产生摩擦来共同耗散振动能量.介绍了阻尼器的结构构造及工作原理.通过试验研究了加载频率、位移幅值对阻尼器力学性能的影响.试验结果表明,在试验频率范围内,阻尼器的刚度、输出力、耗能等主要力学参数随加载频率的改变而变化较小; 位移幅值是影响这些力学参数的主要因素,当阻尼器在小位移的情况下,其刚度变化较小,而输出力和耗能与位移基本成线性关系.但在大位移的情况下,阻尼器的输出力变化较小,而其割线刚度减小,耗能有大幅度的增加.分析表明,该SMA复合阻尼器是一种位移相关性的变刚度阻尼器.
Abstract:
Based on superelastic property of shape memory alloy(SMA), a new SMA damper is designed and manufactured. The damper dissipates vibration energy by means of SMA superelastic damping and the friction between its inner members. Its construction and principle are introduced. Experiments were taken to investigate the influence of frequency and displacement amplitude on the damper’s mechanical behaviors. The results show that, in the range of experimental frequencies, the frequencies have slight effects on SMA damper’s mechanical parameters such as the stiffness, control force, dissipated energy; displacement amplitude is the major factor that affects SMA damper’s mechanical behaviors. Under small displacement the damper’s stiffness has no change and its control force and dissipated energy increase linearly with displacement; on the other hand, under large displacement the damper’s control force has slight change and its secant stiffness reduces, however, its dissipated energy increases greatly. It can be concluded that the SMA damper introduced is a displacement-correlated and variable-stiffness damper.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金重点资助项目(50038010).
作者简介: 左晓宝(1968—),男,博士生,讲师; 李爱群(联系人),男,博士,教授,博士生导师,aiqunli@public1.ptt.js.cn.
更新日期/Last Update: 2004-07-20