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Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4, Pages 606-624 doi: 10.1007/s11709-023-0925-6

Abstract: The result shows that the CSTD yields a stable hysteretic response and affords excellent energy dissipationequal-stiffness design steel tube dampers, the CSTD exhibits better energy dissipation performance, more stable hysteretic

Keywords： cambered surface steel tube damper energy dissipation capacity finite element model hysteretic performance

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Numerical study of the cyclic load behavior of AISI 316L stainless steel shear links for seismic fuse

Ruipeng LI,Yunfeng ZHANG,Le-Wei TONG

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4, Pages 414-426 doi: 10.1007/s11709-014-0276-4

Abstract: This paper presents the results of nonlinear finite element analyses conducted on stainless steel shear links. Stainless steels are attractive materials for seismic fuse device especially for corrosion-aware environment such as coastal regions because they are highly corrosion resistant, have good ductility and toughness properties in combination with low maintenance requirements. This paper discusses the promising use of AISI 316L stainless steel for shear links as seismic fuse devices. Hysteresis behaviors of four stainless steel shear link specimens under reversed cyclic loading were examined to assess their ultimate strength, plastic rotation and failure modes. The nonlinear finite element analysis results show that shear links made of AISI 316L stainless steel exhibit a high level of ductility. However, it is also found that because of large over-strength ratio associated with its strain hardening process, mixed shear and flexural failure modes were observed in stainless steel shear links compared with conventional steel shear links with the same length ratio. This raises the issue that proper design requirements such as length ratio, element compactness and stiffener spacing need to be determined to ensure the full development of the overall plastic rotation of the stainless steel shear links.

Keywords： hysteretic damper eccentrically braced frame energy dissipation seismic stainless steel shear link

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Experimental study of the restoring force mechanism in the self-centering beam (SCB)

Abhilasha MAURYA,Matthew R. EATHERTON

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3, Pages 272-282 doi: 10.1007/s11709-016-0346-x

Abstract: Experimental results are presented including the global force-deformation behavior.The behavior of the restoring force mechanism is described.

Keywords： self-centering seismic system seismic design hysteretic behavior restoring force resilient structural

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Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5, Pages 1214-1226 doi: 10.1007/s11709-019-0550-6

Abstract: A parametric computational study is conducted to investigate the shear yielding, flexural yielding, and lateral torsional buckling limit states for butterfly-shaped links. After validating the accuracy of the finite element (FE) modeling approach against previous experiments, 112 computational models with different geometrical properties were constructed and analyzed including consideration of initial imperfections. The resulting yielding moment, corresponding critical shear force, the accumulation of plastic strains through the length of links as well as the amount of energy dissipated are investigated. The results indicate that as the shape of the butterfly-shaped links become too straight or conversely too narrow in the middle, peak accumulated plastic strains increase. The significant effect of plate thickness on the buckling limit state is examined in this study. Results show that overstrength for these links (peak force divided by yield force) is between 1.2 and 4.5, with straight links producing larger overstrength. Additionally, proportioning the links to delay buckling, and designing the links to yield in the flexural mode are shown to improve energy dissipation.

Keywords： structural fuse hysteretic damper finite element analysis energy dissipation initial imperfection butterfly-shaped

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Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 287-291 doi: 10.1007/s11465-011-0230-2

Abstract: In the current paper, a macroscopic differential model is constructed for the coupled hysteretic dynamicsHysteresis loops associated with stress induced polarization switching and butterfly-shaped behavior

Keywords： differential model state space electromechanical switching butterfly effects hysteresis

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Estimation of relations among hysteretic response measures and design parameters for RC rectangular shear

A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1, Pages 3-15 doi: 10.1007/s11709-017-0418-6

Abstract: The OpenSEES numerical simulations modeling of plastic hinge hysteretic behavior of RC shear walls andestimation of empirical relations among wall hysteretic indices and design parameters are presented.The estimated hysteretic response measures are wall effective stiffness, yield and ultimate curvatures

Keywords： RC wall hysteretic measures RC wall design parameters empirical relations numerical simulations RC rectangular

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Study on damping properties of magnetorheological damper

ZHOU Yu-feng, CHEN Hua-ling

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 452-455 doi: 10.1007/s11465-006-0057-4

Abstract: at high velocity; and when the excitation is a sinusoidal signal, the MR damper reveals a nonlinear hysteretic

Keywords： nonlinear hysteretic force-velocity unsolved excitation magnetorheological

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Seismic analysis of steel structures considering damage cumulation

SHEN Zuyan, WU Aihui

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1, Pages 1-11 doi: 10.1007/s11709-007-0001-7

Abstract: The non-linear damage cumulation hysteretic model incorporating the deterioration of stiffness, strengthA computer program capable of calculating the hysteretic model of steel members, predicting the damage

Keywords： hardening regression analysis computer program cumulation hysteretic strength

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Study on Big Data-based Behavior Modification in Metro Construction

Lie-yun Ding,Sheng-yu Guo

Frontiers of Engineering Management 2015, Volume 2, Issue 2, Pages 131-136 doi: 10.15302/J-FEM-2015037

Abstract: , construction accidents frequently happen, which are significantly attributable to workers’ unsafe behaviorBehavior-based safety (BBS) is an effective method to modify workers’ unsafe behavior.This paper introduces the study on big data-based metro construction behavior modification, aiming toFirst, the behavior modification pushing mechanism based on content-based personalized recommendationSecondly, the development of behavior modification system of metro construction (BMSMC) is introduced

Keywords： big data unsafe behavior behavior modification behavior-based safety (BBS) unsafe behavior rate

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Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Frontiers in Energy 2014, Volume 8, Issue 3, Pages 315-321 doi: 10.1007/s11708-014-0331-9

Abstract: Ellipsoidal particles flowing in the hopper were simulated by using the discrete element method (DEM), and described by the multi-element method. The contact detection algorithm and equations for ellipsoidal particle motion in hopper were developed. And the simulation results were confirmed by experiment. Additionally, the mass flow rate, pressure distribution and velocity distribution of two kinds of particles were examined. The results show that the mass flow rate of ellipsoidal particles is smaller than that of spherical particles. There is a maximum value of pressure drop at the top of the junction. Besides, the pressure drop decreases with the discharging time increasing. The velocity of spherical particle is larger than that of ellipsoidal.

Keywords： discrete element method ellipsoidal particle flow behavior hopper

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Dynamic analyses of steel-reinforced super high-strength concrete columns

JIA Jinqing, JIANG Rui, XU Shilang, HOU Tong

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2, Pages 240-246 doi: 10.1007/s11709-007-0030-2

Abstract: ratio and the stirrup reinforcement ratio were the main experimental variables affecting the dynamic behaviorShear force-displacement hysteretic curves and skeleton curves were drawn.

Keywords： amendment flexural-shear force-displacement hysteretic definite ductility skeleton

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A simplified method for investigating the bending behavior of piles supporting embankments on soft ground

Frontiers of Structural and Civil Engineering Pages 1021-1032 doi: 10.1007/s11709-023-0952-3

Abstract: soil deformation mechanism and Poulos’ solution for pile–soil interaction to investigate the bending behaviorFurthermore, the effect of embedding a pile into a firm ground layer on the bending behavior was investigated

Keywords： bending behavior pile embankment soil−structure interaction failure mode

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Weakening behavior of waterproof performance in joints of shield tunnels under adjacent constructions

Frontiers of Structural and Civil Engineering Pages 884-900 doi: 10.1007/s11709-022-0912-3

Abstract: In this study, the weakening behavior of waterproof performance was investigated in the joints of shield

Keywords： shield tunnel waterproof performance horizontal transverse deformation joint opening weakening behavior

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Effects of herding behavior of tradable green certificate market players on market efficiency: Insights

Frontiers in Energy 2023, Volume 17, Issue 2, Pages 266-285 doi: 10.1007/s11708-021-0752-1

Abstract: efficiency is reflected in stimulating renewable energy investment, but may be reduced by the herding behaviorheterogeneous agents, communication structure, and regulatory rules to explore the characteristics of herding behaviorThe results show that the evolution of herding behavior reduces information asymmetry and improves marketMoreover, the herding behavior may evolve to an equilibrium where the revenue of market players is comparable

Keywords： tradable green certificate herding behavior evolution heterogeneous agent model complex network

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Adsorption behavior of antibiotic in soil environment: a critical review

Shiliang WANG,Hui WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4, Pages 565-574 doi: 10.1007/s11783-015-0801-2

Abstract: Antibiotics are used widely in human and veterinary medicine, and are ubiquitous in environment matrices worldwide. Due to their consumption, excretion, and persistence, antibiotics are disseminated mostly via direct and indirect emissions such as excrements, sewage irrigation, and sludge compost and enter the soil and impact negatively the natural ecosystem of soil. Most antibiotics are amphiphilic or amphoteric and ionize. A non-polar core combined with polar functional moieties makes up numerous antibiotic molecules. Because of various molecule structures, physicochemical properties vary widely among antibiotic compounds. Sorption is an important process for the environment behaviors and fate of antibiotics in soil environment. The adsorption process has decisive role for the environmental behaviors and the ultimate fates of antibiotics in soil. Multiply physicochemical properties of antibiotics induce the large variations of their adsorption behaviors. In addition, factors of soil environment such as the pH, ionic strength, metal ions, and organic matter content also strongly impact the adsorption processes of antibiotics. Review about adsorption of antibiotics on soil can provide a fresh insight into understanding the antibiotic-soil interactions. Therefore, literatures about the adsorption mechanisms of antibiotics in soil environment and the effects of environment factors on adsorption behaviors of antibiotics in soil are reviewed and discussed systematically in this review.

Keywords： adsorption antibiotics environment factors soil