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Open AccessArticle

Plastic Behavior of Metallic Damping Materials under Cyclical Shear Loading

Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Mechanical Engineering School of Jiangnan University, Wuxi 214122, China
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Academic Editor: Thomas Fiedler
Materials 2016, 9(6), 496; https://doi.org/10.3390/ma9060496
Received: 20 April 2016 / Revised: 14 June 2016 / Accepted: 17 June 2016 / Published: 21 June 2016
(This article belongs to the Section Structure Analysis and Characterization)
Metallic shear panel dampers (SPDs) have been widely adopted in seismic engineering. In this study, axial and torsional specimens of four types of metallic damping materials, including three conventional metallic steels as well as low yield strength steel 160 (LYS160), were tested in order to investigate the material response under repeated large plastic strain and low cycle fatigue between 10 and 30 cycles. The present study demonstrated that both the deformation capacity and fatigue performance of LYS160 were underestimated by the conversion from the traditional uniaxial tensile test. The main difference in the failure mechanism between LYS160 and the three conventional materials was determined from the scanning electron microscopy data. The dominant failure mode in LYS160 is stable interlaminate slip and not bucking. Our results provide physical insights into the origin of the large deformation capacity, which is an important foundation for the lightweight design of SPDs. View Full-Text
Keywords: low yield strength steel; cyclic shear loading; failure mechanism; fatigue performance; stability; large plastic shear strain low yield strength steel; cyclic shear loading; failure mechanism; fatigue performance; stability; large plastic shear strain
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MDPI and ACS Style

Zhang, C.; Wang, L.; Wu, M.; Zhao, J. Plastic Behavior of Metallic Damping Materials under Cyclical Shear Loading. Materials 2016, 9, 496.

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