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http://dx.doi.org/10.7781/kjoss.2017.29.3.229

Estimation of Compressive Stiffness of Polyurethane Rubber Springs and Its Application  

Choi, Eunsoo (Department of Civil Engineering, Hongik University)
Park, Seungjin (Department of Civil Engineering, Hongik University)
Woo, Daeseung (Department of Civil Engineering, Hongik University)
Publication Information
Journal of Korean Society of Steel Construction / v.29, no.3, 2017 , pp. 229-236 More about this Journal
Abstract
The purpose of this study is to investigate the behavior and characteristics of rubber springs and calculate the compressive stiffness by performing dynamic compression tests of rubber springs. In order to carry out the dynamic compression test of rubber spring, total 9 rubber springs were tailored by calculating the shape factor of L80-D55, L90-D58, and L100-D60, and used for the experiments. Experiments were performed by controlling the compression according to the length of the rubber spring, and the compression was increased in the order of 5%, 10%, 15%, 20% and 25% of the strain. From the experimental results, the force-strain curves were obtained and it was confirmed that strength decrease and strength increase phenomenon occurred as the strain increased. In addition, it was confirmed that the decrease of stiffness and the increase of stiffness were clearly observed according to the size and diameter of the rubber spring, and the effective compression stiffness was estimated using the slope of the force-strain curve. By using the effective compressive stiffness, design values that can be used in actual design were presented.
Keywords
Effective compressive stiffness; Pre-compressed rubber spring; Strength hardening; Strength softening; Design compressive stiffness;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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