In order to solve the problem that the krill herd(KH)algorithm is premature due to the decrease of population diversity,a new hybrid vortex search KH(VSKH)algorithm has been developed to deal with the global optimizat...In order to solve the problem that the krill herd(KH)algorithm is premature due to the decrease of population diversity,a new hybrid vortex search KH(VSKH)algorithm has been developed to deal with the global optimization problem.The improvement is that a new hybrid vortex search(HVS)operator is added into the updating process of the krill for the purpose of dealing with optimization problems more efficiently.Using 20 benchmark functions for comparison experiments,the results show that the VSKH algorithm has higher accuracy.展开更多
为解决超高层建筑在强风作用下遭受涡旋脱落的影响可能会出现大幅振动问题,提出将高性能串并联调谐质量阻尼器惯容器(tuned tandem mass dampers-inerters,TTMDI)系统用于超高层建筑横向风致振动控制。在频域内,推导出超高层建筑-TTMDI...为解决超高层建筑在强风作用下遭受涡旋脱落的影响可能会出现大幅振动问题,提出将高性能串并联调谐质量阻尼器惯容器(tuned tandem mass dampers-inerters,TTMDI)系统用于超高层建筑横向风致振动控制。在频域内,推导出超高层建筑-TTMDI系统的峰值响应公式,进而定义优化准则,并采用模式搜索法进行控制装置参数寻优。以某超高层建筑为例,考虑TTMDI系统的不同拓扑形式和总惯容质量比,分别从其控制有效性、刚度和阻尼系数、冲程、惯性力和鲁棒性方面,对TTMDI性能进行评估,并与调谐质量阻尼器(tuned mass damper,TMD),串并联调谐质量阻尼器(tuned tandem mass dampers,TTMD)和调谐质量阻尼惯容器(tuned mass damper-inerter,TMDI)进行比较。数值结果表明:TTMDI具有更好的风致振动控制有效性和鲁棒性;此外,当拓扑或总惯容质量比增大到一定程度时,TTMDI只需要一个连接阻尼;而且,TTMDI系统对总阻尼的需求不到TMDI系统的一半,更易于实现。展开更多
基金Supported by the National Natural Science Foundation of China(11871383,71471140)。
文摘In order to solve the problem that the krill herd(KH)algorithm is premature due to the decrease of population diversity,a new hybrid vortex search KH(VSKH)algorithm has been developed to deal with the global optimization problem.The improvement is that a new hybrid vortex search(HVS)operator is added into the updating process of the krill for the purpose of dealing with optimization problems more efficiently.Using 20 benchmark functions for comparison experiments,the results show that the VSKH algorithm has higher accuracy.
文摘为解决超高层建筑在强风作用下遭受涡旋脱落的影响可能会出现大幅振动问题,提出将高性能串并联调谐质量阻尼器惯容器(tuned tandem mass dampers-inerters,TTMDI)系统用于超高层建筑横向风致振动控制。在频域内,推导出超高层建筑-TTMDI系统的峰值响应公式,进而定义优化准则,并采用模式搜索法进行控制装置参数寻优。以某超高层建筑为例,考虑TTMDI系统的不同拓扑形式和总惯容质量比,分别从其控制有效性、刚度和阻尼系数、冲程、惯性力和鲁棒性方面,对TTMDI性能进行评估,并与调谐质量阻尼器(tuned mass damper,TMD),串并联调谐质量阻尼器(tuned tandem mass dampers,TTMD)和调谐质量阻尼惯容器(tuned mass damper-inerter,TMDI)进行比较。数值结果表明:TTMDI具有更好的风致振动控制有效性和鲁棒性;此外,当拓扑或总惯容质量比增大到一定程度时,TTMDI只需要一个连接阻尼;而且,TTMDI系统对总阻尼的需求不到TMDI系统的一半,更易于实现。