Shape Memory Alloy Tension/Compression Device for Seismic Retrofit of Buildings
Shape Memory Alloy Tension/Compression Device for Seismic Retrofit of Buildings
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DOI：
10.1007/s11665-009-9433-7
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发表时间：
2009-08-01
影响因子：
2.3
通讯作者：
Leon, Roberto T.
中科院分区：
文献类型：
--
作者：
Speicher, Matthew;Hodgson, Darel E.;Leon, Roberto T.
张力/压缩装置是为建筑物中的支撑元件而开发的。该装置的设计允许在压缩中使用镍钛诺形式，例如螺旋弹簧或贝氏垫圈。该装置允许整体延伸（拉伸）和压缩，同时使镍钛诺处于最佳变形模式。由于设计的多功能性，可以在不改变整体配置的情况下调整装置的力和行程。这种新设备接受循环加载协议，测试镍钛诺元件恢复大变形的能力。研究评估了不同镍钛合金配置和循环加载历史的影响。结果表明，镍钛诺螺旋弹簧具有良好的回心和阻尼性能，而镍钛诺贝勒维尔垫圈显示出形成镍钛诺阻尼装置基础的良好潜力。
A tension/compression device is developed for applications as bracing elements in buildings. The device is designed to allow Nitinol forms, such as helical springs or Belleville washers, to be used in compression. The device allows both overall extension (tension) and compression while subjecting the Nitinol to an optimum deformation mode. It is possible, due to the versatility of the design, to adjust the force and stroke of the device without changing the overall configuration. This new device is subjected to a cyclic loading protocol that tests the Nitinol element's ability to recover large deformations. The effect of different Nitinol configurations and a cyclic loading history are evaluated in the study. The results show that Nitinol helical springs produce good recentering and damping behavior while Nitinol Belleville washers show good potential to form the basis for a Nitinol damping device.