scholarly journals A FUNDAMENTAL STUDY OF PERFORMANCE VALUES IN HIGH STIFFNESS FLOORSA method to evaluate the habitability of walking-induced vibration on long-span timber floors Part 2

2015 ◽  
Vol 80 (712) ◽  
pp. 509-518 ◽  
Author(s):  
Yutaka YOKOYAMA ◽  
Eiichi KURODA ◽  
Shintaro FUKUDA
Keyword(s):  
Fundamental Study ◽  
High Stiffness ◽  
Long Span

Control of Vibrations due to Moving Loads on Suspension Bridges

2006 ◽  
Vol 11 (3) ◽  
pp. 293-318 ◽  
Author(s):  
M. Zribi ◽  
N. B. Almutairi ◽  
M. Abdel-Rohman
Keyword(s):  
Bridge Deck ◽  
Suspension Bridge ◽  
Lyapunov Theory ◽  
Dynamic Responses ◽  
Suspension Bridges ◽  
Control Force ◽  
Moving Loads ◽  
Hydraulic Actuator ◽  
Long Span ◽  
Suspended Cables

The flexibility and low damping of the long span suspended cables in suspension bridges makes them prone to vibrations due to wind and moving loads which affect the dynamic responses of the suspended cables and the bridge deck. This paper investigates the control of vibrations of a suspension bridge due to a vertical load moving on the bridge deck with a constant speed. A vertical cable between the bridge deck and the suspended cables is used to install a hydraulic actuator able to generate an active control force on the bridge deck. Two control schemes are proposed to generate the control force needed to reduce the vertical vibrations in the suspended cables and in the bridge deck. The proposed controllers, whose design is based on Lyapunov theory, guarantee the asymptotic stability of the system. The MATLAB software is used to simulate the performance of the controlled system. The simulation results indicate that the proposed controllers work well. In addition, the performance of the system with the proposed controllers is compared to the performance of the system controlled with a velocity feedback controller.

Fundamental Study on Application of the Nanocomposite to an Electrical Rotating Machine

2017 ◽  
Vol 137 (11) ◽  
pp. 645-651
Author(s):  
Kotaro Mura ◽  
Toshihiro Tsuda ◽  
Tetsuo Yoshimitsu ◽  
Takuya Onishi ◽  
Shuichiro Hashimoto ◽  
...  
Keyword(s):  
Fundamental Study ◽  
Rotating Machine

Fundamental Study for Locating Water Tree Degradation in XLPE Cables

2015 ◽  
Vol 135 (7) ◽  
pp. 424-430 ◽  
Author(s):  
MyongHwan Kim ◽  
Yoshinobu Murakami ◽  
Masayuki Nagao ◽  
Naohiro Hozumi ◽  
Takashi Kurihara ◽  
...  
Keyword(s):  
Fundamental Study ◽  
Water Tree

Load Testing of Long Span Prestressed Single Tee Beams

PCI Journal ◽  
1988 ◽  
Vol 33 (2) ◽  
pp. 42-51
Author(s):  
Predrag L. Popovic ◽  
Neal S. Anderson
Keyword(s):  
Load Testing ◽  
Long Span
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