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首页> 外文期刊>International journal of structural stability and dynamics >An Empirical Formulation for the Damping Ratio of Shape Memory Alloy for Base-Isolated Structures
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An Empirical Formulation for the Damping Ratio of Shape Memory Alloy for Base-Isolated Structures

机译:基础隔离结构形状记忆合金阻尼比的经验制定

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摘要

Shape Memory Alloys (SMAs) are now widely used as a damping element into the isolation systems. The pre-stressed SMAs exhibit hysteretic damping through a nonlinear flag-shaped hysteresis loop. Many nonlinear models of the SMA are available to depict such behavior. The nonlinear models require a lot of effort and computational time for the analysis of base isolated structures. Therefore, the codes recommend that a nonlinear model can be replaced by an equivalent linear model in the analysis. Linearization is a method to convert the nonlinearity of a system into a system with analogues linear parameters. This paper proposes an empirical equation for a damping ratio to get a linear damping coefficient of the SMAs which can be used in the seismic analysis of base-isolated structures.
机译:形状记忆合金(SMA)现在广泛用作阻尼元件进入隔离系统。 预应力的SMA通过非线性旗形滞后回路表现出滞后阻尼。 SMA的许多非线性模型可用于描述这种行为。 非线性模型需要大量的努力和计算时间来分析基础隔离结构。 因此,该代码建议在分析中可以通过等效的线性模型替换非线性模型。 线性化是一种将系统的非线性转换为具有类似物线性参数的系统的方法。 本文提出了一种阻尼比的经验方程,以获得可用于碱基隔离结构的地震分析中的SMA的线性阻尼系数。

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