| Civil Engineering |
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| Investigation of newly developed added damping andstiffness device with low yield strength steel |
| SHIH Ming-hsiang, SUNG Wen-pei, GO Cheer-germ |
| Department of Construction Engineering, National Kaoshiang First University of Science and Technology, Taiwan 824, China; Department of Landscape Design and Management, National Chin-Yi Institute of Technology, Taiwan 41111, China; Department of Civil Engineering, National Chung Hsing University, Taiwan 40227, China |
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Abstract Energy dissipators, isolated-resistant and specific structural forms for earthquake resistance are popular topics in the research to improve shock-resistance. In this work, experimental methods were used to investigate the property of low yield strength steel. Carbon content in LYS material is lower than that in other steels; the ultimate stress is three times the yield stress. The ultimate elongation rate is about 62% and the ductility is 2-3 times that of A36 steel. In order to overcome some defects of ordinary use metallic dampers, the mechanical characteristic of low yield strength steel is used to develop added damping and stiffness for rhombic steel plate absorber. Test of the energy dissipation behavior for this newly developed device indicated that LYS could stably dissipate or absorb the input energy of earthquake. Then, the analytical model for the hysteretic behavior of this new device is proposed. Comparison of experimental data and numerical simulation results showed that this analytical model is suitable for simulating the hysteretic energy behavior of this new device.
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Received: 15 March 2003
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