Dependence of polymer concrete vibration characteristics on internal pipe and damper embedment

Title
Dependence of polymer concrete vibration characteristics on internal pipe and damper embedment
Author
박준홍
Keywords
Dynamic property; Polymer concrete; Pipe embedment; Impact damper; Damping ratio
Issue Date
2016-05
Publisher
ELSEVIER SCI LTD
Citation
COMPOSITE STRUCTURES, v. 143, Page. 347-351
Abstract
A method to improve the damping characteristics of polymer concretes was investigated. A pipe structure was embedded in polymer concrete specimens. The frequency-dependent variations of the dynamic stiffness and the loss factors of the specimens were measured by the vibration test method to identify the damping enhancement from the embedded structure. The weight reduction effect of epoxy resin usage was compared after the pipe embedment. Impact dampers were applied to the pipe-embedded polymer concretes to improve their vibrational energy dissipation. The impact dampers were fabricated through the insertion of impact balls into the pipe structures. The dynamic properties of the impact damper-embedded polymer concretes were obtained by vibration tests. The damping performance was investigated according to the gap size between the impact ball and the pipe. An analytic model was used to predict the vibrational behavior of the polymer concrete when the impact dampers were applied. Consequently, the effect on vibration damping was identified for different mass ratios and gaps to find optimal construction. (C) 2016 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0263822316300514?via%3Dihubhttp://hdl.handle.net/20.500.11754/55207
ISSN
0263-8223; 1879-1085
DOI
10.1016/j.compstruct.2016.02.031
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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