天津大学学报(英文版)
天津大學學報(英文版)
천진대학학보(영문판)
TRANSACTIONS OF TIANJIN UNIVERSITY
2003年
4期
326-329
,共4页
郑宏宇%姜大宁%唐友刚%周满红
鄭宏宇%薑大寧%唐友剛%週滿紅
정굉우%강대저%당우강%주만홍
jacket platform%vibration response induced by ice%vibration control%magnetorheological suspensions technology
Based on the self-excited vibration theory of ice, the vibration control technology of jacket platform is studied in this paper. The magnetorheological suspensions (MR) unit is chosen as the damper, the control objective function for vibration excited by ice is determined by instantaneous optimal control (IOC) method, and genetic algorithm (GA) is used to select the optimal control force. For the jacket platform of 40 m in height and a 3-floor deck, the vibration responses induced by ice have been calculated before and after control considering the different thickness and speed of ice. It is shown that the control method presented in this paper can reduce the vibration response by 30%, and it is feasible to adopt MR absorber and GA in the control of vibration induced by ice.
