Behavior of large diameter NiTi SMAs for seismic applications

机译：大直径NiTi SMA在地震中的行为

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This study evaluates the behavior and properties of large diameter NiTi shape memory alloy bars under cyclic loadings to determine their potential in seismic resistant design of civil engineering structures. The unique ability of shape memory alloys to undergo large deformations while returning to their original undeformed shape provides both recentering capabilities and added damping to a structure. Both martensitic and austenitic NiTi shape memory alloy bars are tested at loading rates typical of an earthquake to evaluate the effect bar size (diameter) and cyclic loading history have on the mechanical behavior. Analyses are performed using a nonlinear model of a reinforced concrete frame in order to determine the effectiveness of shape memory alloys in improving the seismic response of a typical building. Large reductions in the response of the frame show the viability of using shape memory alloy (SMA) technology in the field of structural engineering.

机译：本研究评估了大直径NiTi形状记忆合金棒在循环载荷下的行为和性能，以确定其在土木工程结构抗震设计中的潜力。形状记忆合金在恢复其原始未变形形状时经历大变形的独特能力既提供了对心能力，又为结构增加了阻尼。马氏体和奥氏体NiTi形状记忆合金棒都在典型的地震加载速率下进行测试，以评估棒尺寸（直径）和循环加载历史对力学行为的影响。为了确定形状记忆合金在改善典型建筑物的地震响应中的有效性，使用钢筋混凝土框架的非线性模型进行了分析。框架响应的大幅降低表明在结构工程领域中使用形状记忆合金（SMA）技术的可行性。

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来源
《International PhD Symposium in Civil Engineering vol.2; 20040616-19; Delft(NL)》|2004年|P.887-895|共9页
会议地点 Delft(NL)
作者
Jason McCormick; Reginald DesRoches;
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作者单位

Georgia Institute of Technology, Atlanta, GA, USA;

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原文格式 PDF
正文语种 eng
中图分类市政工程;
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Behavior of large diameter NiTi SMAs for seismic applications

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