Experimental Study of Dynamic Properties for Serially Isolated System

2011 ◽  
Vol 250-253 ◽  
pp. 2814-2817
Author(s):  
Dong Bing Zhang ◽  
Xiang Lin Jiang ◽  
Yan Hui Liu
Keyword(s):  
Experimental Study ◽  
Dynamic Properties ◽  
Tensile Force ◽  
Shaking Table ◽  
Scale Model ◽  
Small Scale ◽  
Natural Period ◽  
The Difference ◽  
Isolation Device ◽  
Small Scale Model

This paper presents a new-style isolation device for serially isolated system by the dynamic analysis to serially isolated system. This device has small horizontal stiffness and the difference of this device with rubber-lead bearing is that this device can resist biggish vertical tensile force. Then the experiment for small-scale model of this device based on sweep sine shaking table is processed. The results show serially isolated system with this device can prolong natural period of serial system and effectively decrease the response of superstructure and have good isolated performance and stability.

Vibration Suppression of Traffic Signal Pole by Generating Electrical Power

2013 ◽  
Author(s):  
Taichi Matsuoka ◽  
Takuya Wada ◽  
Mizuki Katakura
Keyword(s):  
Vibration Suppression ◽  
Electrical Power ◽  
Small Deformation ◽  
Electrical Energy ◽  
Traffic Signal ◽  
Shaking Table ◽  
Scale Model ◽  
Small Scale ◽  
Damping Force ◽  
Small Scale Model

The authors propose a damper that generates electrical power in order to not only suppress vibration and also get electrical energy when many traffic signal poles are oscillated by wind, traffic turbulence, and earthquake. The damper consists of a displacement magnifying mechanism by using levers, solenoid coils and rare-earth magnets. It is useful for small deformation between a beam and a column of the traffic pole. Vibration modes of the pole are analyzed by using FEM, and then a small scale model of the traffic pole is built up. The small scale model has 2.3 m high, consists of a steel column and a cantilever beam due to rescale about 1/3 of real scale one, and natural frequency is about 3.5 Hz. Trial damper is manufactured and a damping force, which is caused by the coils crossing magnetic field, is adjusted. Dynamic characteristics of the trial damper are measured by a shaking actuator. In order to confirm vibration reduction, both of seismic and harmonic vibration tests of small scale model when the trial damper is installed are carried out by using a shaking table. The experimental results of harmonic responses are compared with the calculated results by FEM, and effect of vibration suppression and efficiency of generating power are discussed experimentally and numerically.

Wave Energy Hyperbaric Device for Electricity Production

2007 ◽  
Author(s):  
Segen F. Estefen ◽  
Paulo Roberto da Costa ◽  
Eliab Ricarte ◽  
Marcelo M. Pinheiro
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Experimental Results ◽  
Electricity Production ◽  
Scale Model ◽  
Small Scale ◽  
Regular Waves ◽  
Hyperbaric Chamber ◽  
Small Scale Model

Wave energy is a renewable and non-polluting source and its use is being studied in different countries. The paper presents an overview on the harnessing of energy from waves and the activities associated with setting up a plant for extracting energy from waves in Port of Pecem, on the coast of Ceara State, Brazil. The technology employed is based on storing water under pressure in a hyperbaric chamber, from which a controlled jet of water drives a standard turbine. The wave resource at the proposed location is presented in terms of statistics data obtained from previous monitoring. The device components are described and small scale model tested under regular waves representatives of the installation region. Based on the experimental results values of prescribed pressures are identified in order to optimize the power generation.

Staged-Air Ratio Optimization for a New Down-Fired Technology within a Cold Small-Scale Model of a 350 MWeUtility Boiler

2011 ◽  
Vol 25 (4) ◽  
pp. 1485-1496 ◽  
Author(s):  
Min Kuang ◽  
Zhengqi Li ◽  
Pengfei Yang ◽  
Jinzhao Jia ◽  
Qunyi Zhu
Keyword(s):  
Scale Model ◽  
Small Scale ◽  
Ratio Optimization ◽  
Small Scale Model

scholarly journals Monitoring deformation of small scale model tunnels under load testing

Survey Review ◽  
2014 ◽  
Vol 46 (339) ◽  
pp. 417-425 ◽  
Author(s):  
H-M. Chen ◽  
M. Smith ◽  
H-S. Yu ◽  
N. Kokkas
Keyword(s):  
Scale Model ◽  
Small Scale ◽  
Load Testing ◽  
Small Scale Model

A small-scale model of factor VIII and factor IX fractionation from plasma

1989 ◽  
Vol 10 (4) ◽  
pp. 279-286 ◽  
Author(s):  
Peter Feldman ◽  
Lowell Winkelman ◽  
Helen Evans ◽  
Martin Pinnell ◽  
Fiona Murdoch ◽  
...  
Keyword(s):  
Factor Viii ◽  
Factor Ix ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model

A Small Scale Model for Seismic Imaging Systems

1972 ◽  
pp. 195-213 ◽  
Author(s):  
M. G. Maginness ◽  
G. B. Cook ◽  
L. G. Higgens
Keyword(s):  
Seismic Imaging ◽  
Imaging Systems ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model
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