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Open AccessArticle

Effect of T-Shape Shoulder Fillet on the Plastic Deformation Properties of SS400 and LYS160 Steel

1
Institute of Engineering Mechanics, China Earthquake Administration; Key Laboratory of Earthquake Engineering and Engineering Vibration, 29 Xuefu Road, Nangang District, Harbin 150006, China
2
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Mechanical Engineering School of Jiangnan University, Lihu Road 1800, Binhu District, Wuxi 214100, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1528; https://doi.org/10.3390/ma13071528 (registering DOI)
Received: 27 February 2020 / Revised: 24 March 2020 / Accepted: 25 March 2020 / Published: 26 March 2020
(This article belongs to the Section Construction and Building Materials)
Shoulder fillets are widely used in the structural optimization design of metal dampers. However, the plastic deformation property of dampers affected by stress concentration, owing to different fillets, has not been explored in-depth. In this study, two typical metal damper materials with different plastic deformation, i.e., ordinary steel SS400 and low-yield-strength steel LYS160, were investigated. The strengthening effect of fillets under different loading is evaluated by comparing the mechanical properties of different fillet heights. Furthermore, the effect of the stress concentration caused by different fillet shapes, based on the failure mode of materials, is discussed. Subsequently, the fatigue degradation effect under the reciprocating shear loading is studied. Based on a series of studies on the deformation properties of fillets in different ductile materials, the basis for the structural optimization design under plastic deformation is provided. View Full-Text
Keywords: shoulder fillet; plastic deformation; strengthening effect; failure mode; fatigue performance shoulder fillet; plastic deformation; strengthening effect; failure mode; fatigue performance
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MDPI and ACS Style

Zhang, C.; Shixi, C.; Lin, X.; Zhao, J.; Wang, Q. Effect of T-Shape Shoulder Fillet on the Plastic Deformation Properties of SS400 and LYS160 Steel. Materials 2020, 13, 1528.

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