Experimental Investigation of Fracture Performances of SBHS500, SM570 and SM490 Steel Specimens with Notches

Liu, Yan; Ikeda, Shuto; Liu, Yanyan; Kang, Lan; Ge, Hanbin

doi:10.3390/met12040672

Cited by 5 publications

(1 citation statement)

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“…Three papers focused on the material properties of structural steel, which presented investigations on the chemical composition of weld metals [1]; the fracture performances of SBHS500, SM570, and SM490 steel [2]; and the cyclic performance of structural steels after exposure to various heating-cooling treatments [3].…”

Section: Contributionsmentioning

confidence: 99%

Modelling, Test and Practice of Steel Structures

Chen

Chan

2022

Metals

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Section: Contributionsmentioning

confidence: 99%

Modelling, Test and Practice of Steel Structures

Chen

Chan

2022

Metals

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Numerical modeling of cyclic softening/hardening behavior of carbon steels from low- to high-cycle fatigue regime

Fincato

Yonezawa

Tsutsumi

2023

Archiv.Civ.Mech.Eng

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The aim of this study is to characterize the stress–strain behavior of three construction steels (SM490, SM570, and F18B) through both experimental and numerical investigations. The material performance was evaluated by conducting tests on round bar specimens subjected to monotonic, fatigue, and incremental step fully reversed loading conditions. The experimental campaign was conducted to provide valuable information on the mechanical performances of the steels and data for calibrating the material constants required for numerical analyses. The numerical simulations aimed to demonstrate the effectiveness of the proposed unconventional plasticity model, the Fatigue SS model (FSS), in describing the non-linear behavior of the materials under a broad range of loading conditions, including stress states below and beyond the macroscopic yield condition. This aspect is a significant advantage of the FSS model, as conventional elastoplastic theories fail to provide a phenomenological description of inelastic material deformation under stress states within the yield condition. The good agreement between the experimental and numerical results confirms the validity of the calibration of the material constants and the reliability of the computational approach.

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Computational Modeling of U-Shaped Seismic Dampers for Structural Damage Mitigation

Tuninetti,

Gómez,

Bustos

et al. 2024

Applied Sciences

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U-shaped seismic dampers, passive metallic devices that dissipate energy by cyclic plastic deformation, are designed to mitigate the effects of seismic loads on structures. This study focuses on the development of an advanced computational model of a U-shaped damper, chosen for its unique design of variable thickness and width, which contributes to its superior performance. The simulation uses nonlinear finite element analysis and a bilinear hardening model calibrated to the actual stress–strain curve of the low-carbon steel. To ensure accuracy, a rigorous mesh convergence analysis is performed to quantify numerical prediction errors and establish a model suitable for predicting local deformation phenomena, including strain and stress fields, throughout the displacement-based loading protocol. Mesh sensitivity analysis, performed by examining the equivalent stress and cumulative plastic strain, derives the damper hysteresis curve and confirms the convergence criteria of the mesh within the experimentally observed plastic response range of the material. The resulting computational model is a novel contribution that provides reliable predictions of local inhomogeneous deformation and energy dissipation, essential for optimizing damper design and performance through more sophisticated damage-fatigue models that guarantee the lifetime of a damper.

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Experimental Investigation of Fracture Performances of SBHS500, SM570 and SM490 Steel Specimens with Notches

Cited by 5 publications

References 28 publications

Modelling, Test and Practice of Steel Structures

Modelling, Test and Practice of Steel Structures

Numerical modeling of cyclic softening/hardening behavior of carbon steels from low- to high-cycle fatigue regime

Computational Modeling of U-Shaped Seismic Dampers for Structural Damage Mitigation

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