Optimal design of two viscous dampers for multi-mode control of a cable covering broad frequency range

2021 ◽  
Vol 245 ◽  
pp. 112830
Author(s):  
Chao Yang ◽  
Zhengqing Chen ◽  
Wenxi Wang ◽  
Xugang Hua ◽  
Yafei Wang
Keyword(s):  
Optimal Design ◽  
Frequency Range ◽  
Viscous Dampers ◽  
Broad Frequency Range ◽  
Mode Control ◽  
Multi Mode

Optimal design of viscous dampers for multi-mode vibration control of bridge cables

2005 ◽  
Vol 27 (5) ◽  
pp. 792-800 ◽  
Author(s):  
X.Y. Wang ◽  
Y.Q. Ni ◽  
J.M. Ko ◽  
Z.Q. Chen
Keyword(s):  
Optimal Design ◽  
Vibration Control ◽  
Viscous Dampers ◽  
Mode Vibration ◽  
Multi Mode

A Communication-less Multi-mode Control Approach for Adaptive Power-Sharing in Ships-based Seaport Microgrid

2021 ◽  
pp. 1-1
Author(s):  
Muhammad Umair Mutarraf ◽  
Yacine Terriche ◽  
Mashood Nasir ◽  
Yajuan Guan ◽  
Chun-Lien Su ◽  
...  
Keyword(s):  
Power Sharing ◽  
Control Approach ◽  
Mode Control ◽  
Adaptive Power ◽  
Multi Mode

Design of a Variable Thickness Plate to Focus Bending Waves

2012 ◽  
Author(s):  
Noah H. Schiller ◽  
Sz-Chin Steven Lin ◽  
Randolph H. Cabell ◽  
Tony Jun Huang
Keyword(s):  
Numerical Simulations ◽  
Thin Plate ◽  
Traveling Waves ◽  
Variable Thickness ◽  
Focal Point ◽  
Frequency Range ◽  
Additional Energy ◽  
Broad Frequency Range ◽  
Bending Waves ◽  
Energy Dissipated

This paper describes the design of a thin plate whose thickness is tailored in order to focus bending waves to a desired location on the plate. Focusing is achieved by smoothly varying the thickness of the plate to create a type of lens, which focuses structure-borne energy. Damping treatment can then be positioned at the focal point to efficiently dissipate energy with a minimum amount of treatment. Numerical simulations of both bounded and unbounded plates show that the design is effective over a broad frequency range, focusing traveling waves to the same region of the plate regardless of frequency. This paper also quantifies the additional energy dissipated by local damping treatment installed on a variable thickness plate relative to a uniform plate.

Optimal Design of Nonlinear Viscous Dampers for Protection of Isolated Bridges

2012 ◽  
pp. 370-398
Author(s):  
Alexandros A. Taflanidis ◽  
Ioannis G. Gidaris
Keyword(s):  
Optimal Design ◽  
Dynamic Behavior ◽  
Stochastic Simulation ◽  
Seismic Risk ◽  
Probabilistic Framework ◽  
Viscous Dampers ◽  
Nonlinear Characteristics ◽  
Bridge Model ◽  
Supplemental Dampers ◽  
Isolated Bridges

A probabilistic framework based on stochastic simulation is presented in this chapter for optimal design of supplemental dampers for multi - span bridge systems supported on abutments and intermediate piers through isolation bearings. The bridge model explicitly addresses nonlinear characteristics of the isolators and the dampers, the dynamic behavior of the abutments, and the effect of pounding between the neighboring spans to each other as well as to the abutments. A probabilistic framework is used to address the various sources of structural and excitation uncertainties and characterize the seismic risk for the bridge. Stochastic simulation is utilized for evaluating this seismic risk and performing the associated optimization when selecting the most favorable damper characteristics. An illustrative example is presented that considers the design of nonlinear viscous dampers for protection of a two-span bridge.

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