The Next Generation of Tuned Liquid Dampers for Controlling Structural Motions

9503779 Kareem该项目的目标之一是设计和开发控制系统，以在不同的负载条件下保持晃动阻尼器(TSD)和调谐液柱阻尼器(TLCD)的最佳倾倒水平。目前安装的系统并不总是在最佳的阻尼值下运行，因此，该项目将开发半主动系统，包括用于TSD的可变开度筛网或挡板和用于TLCD的可变孔口以保持最佳阻尼值。对这些设计的分析将包括单个阻尼器以及多个略微失谐的阻尼器配置，以受益于它们良好的动态特性。另一个目标是解决目前被动式液体阻尼器的缺点，即它们对突然加载的反应迟缓。为了使惯性减振系统更加有效，将在实验中引入初始液体振荡。将使用数值模型和物理比例模型来评估下一代液体阻尼器的性能。这些系统在设计和开发方面的进步将提高安全性，减少结构和经济损失。***

9503779 Kareem One objective of the project concerns the design and development of control systems to maintain optimal dumping levels in sloshing dampers (TSD) and in tuned liquid column dampers (TLCD) under varied loading conditions. Presently installed systems are not operating at an optimal level of damping at all times thus, this project will develop semi- active systems involving variable opening screen or baffles for TSDs and variable orifices for TLCDs for maintaining optimal damping values. Analysis of these designs will include single dampers as well as multiple slightly detuned damper configurations to benefit from their favorable dynamic characteristics. The other objective addresses the shortcomings of current passive liquid dampers, i.e., their sluggishness in responding to sudden loads. Initial liquid oscillations will be introduced experimentally to make the inertial damping system more effective. Numerical models and physical scale models will be used to evaluate the performance of the next generation of liquid dampers. Advances in the design and development of these systems will result in increased safety and decreased structural and economic losses. ***