An innovative self‐centering‐energy‐dissipation device (SCED) based on a superelastic shape memory alloy (SMA) is developed. This device exhibits asymmetric, flag‐shaped hysteretic behavior and tension–compression symmetry property. The symmetry is attributed to the tension‐only state of the SMA wires in the device during the loading process. The working principle of the device is described, and a theoretical model describing the mechanical properties of the device is proposed. Uniaxial tension–compression cyclic loading tests are carried out to investigate the influence of the section area of the SMA wire, the loading amplitude, and the loading rate on the mechanical performance, including the yield strength, maximum strength, austenite stiffness, martensite stiffness, energy dissipation, and efficiency ratio. Expressions of the correction factors and mechanical performance considering multiple factors are also suggested.

中文翻译：

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基于形状记忆合金的自定心耗能装置机械性能的多因素实验研究

开发了一种基于超弹性形状记忆合金（SMA）的创新型自定心能量耗散装置（SCED）。该装置表现出不对称的，旗形的磁滞行为和拉压对称特性。对称性归因于加载过程中设备中SMA线的仅张紧状态。描述了该装置的工作原理，并提出了描述该装置机械性能的理论模型。进行了单轴拉伸压缩循环试验，以研究SMA线材的截面积，载荷幅度和载荷速率对机械性能的影响，包括屈服强度，最大强度，奥氏体刚度，马氏体刚度，能量消耗和效率比。