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首页> 外文期刊>Engineering Optimization >Robust design of tuned mass dampers installed on multi-degree-of-freedom structures subjected to seismic action
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Robust design of tuned mass dampers installed on multi-degree-of-freedom structures subjected to seismic action

机译：安装在地震作用下的多自由度结构上的调谐质量阻尼器的鲁棒设计

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摘要

This study deals with robust optimum design of tuned mass dampers installed on multi-degree-of-freedom systems subjected to stochastic seismic actions, assuming the structural and seismic model parameters to be uncertain. A new global performance index for evaluating the efficiency of protection systems is proposed, as an alternative to commonly used local performance indices such as the maximum interstorey drift. The latter can be considered a good estimator of seismic damage, but it does not measure the whole structural integrity. The direct perturbation method based on first order approximation is adopted to evaluate the effects of uncertainties on the response. The robust design is formulated as a multi-objective optimization problem, in which both the mean and the standard deviation of the performance index are simultaneously minimized. A comparison of the effectiveness and robustness of tuned mass dampers designed using local or global performance indices is carried out, considering different levels of uncertainty.
机译：这项研究处理了在随机地震作用下安装在多自由度系统上的调谐质量阻尼器的鲁棒优化设计，假设结构和地震模型参数不确定。提出了一种用于评估保护系统效率的新的全局性能指标，以替代常用的局部性能指标（例如最大层间漂移）。后者可以被认为是地震破坏的一个很好的估计，但是它不能衡量整个结构的完整性。采用基于一阶近似的直接摄动法来评估不确定性对响应的影响。健壮的设计被公式化为一个多目标优化问题，其中性能指标的均值和标准偏差同时最小化。考虑到不同程度的不确定性，对使用局部或全局性能指标设计的调谐质量阻尼器的有效性和耐用性进行了比较。

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