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Optimum Value of Negative Stiffness and Additional Damping in Civil Structures
| 题名： | Optimum Value of Negative Stiffness and Additional Damping in Civil Structures |
| 正文语种： | 英文 |
| 作者： | Chunxu Qu; Hong-Nan Li, A.M.ASCE; Linsheng Huo;Ting-Hua Yi, A.M.ASCE |
| 作者单位： | Dalian Univ, of Technology |
| 关键词： | Negative stiffness; Additional damping; Bilinear matrix inequality; Homotopy; Convex; Superstructure; Structural optimization. |
| 摘要： | The negative stiffness (NS) phenomenon and additional supplemental damping (AD) were proposed and investigated in recent years. Despite the bulk of literature on the base shear reduction for structures with the NS at the base or on the first story, the application of the NS and AD in the stories of a superstructure was barely studied. Considering the implementation of the NS and AD in a passive way, this paper proposes an innovative approach to optimize the NS and AD values on the different stories of civil structures. First, the formulation is derived to convert the optimization of NS and AD to the static feedback decentralized controller design problem. Then, the controller is searched by homotopy path, which leads to a local optimal solution. Finally, the procedure is validated by a 20-story benchmark structural model. DOI: 10.106l/(ASCE)ST.1943-541X.0001805. © 2017 American Society of Civil Engineers. |
| 出版日期： | 2017.08 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.08 |
| 页码： | 04017068 |
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