中文核心期刊
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中国科技核心期刊
RCCSE中国核心学术期刊
Journal of Chongqing Jiaotong University(Natural Science)

Journal of Chongqing Jiaotong University(Natural Science) ›› 2014, Vol. 33 ›› Issue (1): 8-11.DOI: 10.3969/j.issn.1674-0696.2014.01.02

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Numerical Simulation and Experimental Study for Vibration of Simple Cable Network with Shape Memory Alloy Cross-Tie

Zhou Haijun , Chen Chaojun , Yang Xia , Lin Beichun   

  1. Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering， Shenzhen University , Shenzhen 518060 , Guangdong , China
  • Received:2013-05-23 Revised:2013-09-13 Online:2014-02-15 Published:2015-01-22

形状记忆合金辅助索-简化索网模型 振动特性的数值模拟及试验研究

周海俊，陈朝骏，杨夏，林焙淳   

  1. 深圳大学广东省滨海土木工程耐久性重点实验室，广东深圳518060
  • 作者简介:周海俊(1977-) ，男，浙江永嘉人，副教授，博士，主要从事桥梁结构振动控制与监测、滨海土木工程结构耐久性方面的研究。L mail: haijun@szu.edu.cn 。
  • 基金资助:
    国家自然科学基金项目(51108269) ;深圳市基础研究计划项目(JC201005280580A)

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Abstract: The simple cable netwo1'k model with a shape memory alloy (SMA) cross-tie was established by Finite Element Method (FEM). And the model was composed of two parallel cables and a SMA cross-tie. The modal damping ratio was calculated from the simulated free vib1'ation time curves of the simplified cable network and the vibration of the cable network was analyzed. The different damping effects between SMA cross> tie and common steel cross-tie were studied. The results show that the damping effect of SMA cross-tie is betle1' than common steel cross-tie. It is found that the numerical simulation results are in good acco1'dance with the modal test results.

Key words: SMA (Shape Memory Alloy) , c1oss-ties, cable network, modal damping ratio, FEM

摘要： 采用有限元软件建立了形状记忆合金(Shape Memory Alloy ，简称SMA) 辅助索-简化索网系统模型，该简化索 网模型由两根平行的拉索和-根SMA 辅助索所组成。由数值模拟得到的简化索网模型的自由振动时程曲线，计算 得到振动模态阻尼比，分析了索网系统的振动特性。研究了SMA 辅助索连接与普通钢绞线辅助索两种不同连接方 式对索网系统阻尼的影响，结果表明:SMA 辅助索的减振效果是比普通钢丝辅助索要好。对比数值模拟结果与模 型实验结果，发现两者吻合良好。

关键词: 形状记忆合金, 辅助索, 索网, 模态阻尼比, 有限元方法

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