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Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: the elevated temperature creep model of PWSs.temperature creep test.It was concluded that the temperature level had a more significant effect on the creep strain than theBy comparing the elevated temperature creep test results for PWSs and steel strands, it was found thatthe creep strain of PWSs was lower than that of steel strands at the same temperature and stress levels

Keywords： parallel wire strands experimental study elevated temperature creep model

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Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature andelevated pressure

Frontiers in Energy 2022, Volume 16, Issue 2, Pages 263-276 doi: 10.1007/s11708-021-0791-7

Abstract: The laminar flame speeds of ammonia mixed with syngas at a high pressure, temperature, and differentFour kinetic models (the Glarborg model, Shrestha model, Mei model, and Han model) were compared and

Keywords： ammonia mixed with syngas laminar flame speed kinetic model sensitivity analysis pathway analysis

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A model for creep life prediction of thin tube using strain energy density as a function of stress triaxialityunder quasi-static loading employing elastic-creep & elastic-plastic-creep deformation

Tahir MAHMOOD, Sangarapillai KANAPATHIPILLAI, Mahiuddin CHOWDHURY

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2, Pages 181-186 doi: 10.1007/s11465-013-0257-7

Abstract:

This paper demonstrates the application of a new multiaxial creep damage model developed by authorsThe model employs strain energy density and assumes that the uniaxial strain energy density of a componentFor comparison, an elastic-creep and elastic-plastic-creep finite element analysis (FEA) is performedThe verification and application of the model are demonstrated by applying it to thin tube for whichThe predicted failure times by the model are compared with the experimental results.

Keywords： elastic-creep elastic-plastic-creep stress triaxiality life prediction pressure vessels finite element

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Creep of brazed plate-fin structures in high temperature compact heat exchangers

Shantung TU, Guoyan ZHOU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4, Pages 355-362 doi: 10.1007/s11465-009-0065-2

Abstract: In recent years, the need for high temperature heat exchangers to improve the efficiency of power andHowever, the creep design of the high temperature compact heat exchangers has been a primary concernbecause the working temperature can be well above the creep limit of the materials.To establish the high temperature design criterion for compact heat exchangers, creep behavior of theThe significant effect of creep property mismatch in the brazed joint on the creep strength is demonstrated

Keywords： compact heat exchanger creep damage brazing joint

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Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3, Pages 664-674 doi: 10.1007/s11709-020-0620-9

Abstract: For reinforced concrete members subjected to high temperature, the degree of in-service loading, commonlyimposed loading during their service life and it is important to understand the likely response at elevatedis numerically investigated at both material and structural level using a validated finite element modelThe model incorporates a proposed constitutive model accounting for load-induced thermal strain and thisis shown to outperform the existing Eurocode 2 model in terms of accuracy.

Keywords： concrete finite elements fire load-induced thermal strain punching shear

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Creep and recovery behaviors of magnetorheological elastomers

Weihua LI, Yang ZHOU, Tongfei TIAN, Gursel ALICI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3, Pages 341-346 doi: 10.1007/s11465-010-0096-8

Abstract: This paper presents experimental and modeling study of creep and recovery behaviors of magneto-rheologicalThe effects of the magnetic field and stress on MRE creep behaviors were discussed.Moreover, a four-parameter viscoelastic model was developed to describe MRE creep behaviors.The comparison between the experimental results and the modeling predictions indicates that the modelcan predict MRE creep behaviors very well.

Keywords： magneto-rheological elastomers (MREs) creep recovery linear viscoelastic model

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Responses of microbial interactions to elevated salinity in activated sludge microbial community

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 5, doi: 10.1007/s11783-023-1660-x

Abstract:

● Salinity led to the elevation of NAR over 99.72%.

Keywords： Elevated salinity Activated sludge system Pollution removal Microbial interactions Competitive relationship

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Modeling of semi-rigid beam-to-column steel joints under extreme loading

C FANG, B A IZZUDDIN, A Y ELGHAZOULI, D A NETHERCOT

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3, Pages 245-263 doi: 10.1007/s11709-013-0215-9

Abstract: The model enables a direct integration of joint response into global frame models with the considerationIn addition, elevated temperature can be considered in the joint model via the degradation of the componentThrough comparisons with available test data, the joint model is shown to have good accuracy, and the

Keywords： semi-rigid joint component method ductility elevated temperature

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Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 297-307 doi: 10.1007/s11709-012-0162-x

Abstract: co-rotational total Lagrangian finite element formulation is derived, and the corresponding numerical modelThe geometric nonlinearity, material nonlinearity, high temperature creep, and temperature rate of changeTo verify the accuracy and efficiency of the numerical model, four prototypical numerical examples areanalyzed using this model, and the results show very good agreement with the solutions in the literatureNext, the numerical model is used to analyze the creep behavior of the plane steel frames under decreasing

Keywords： creep plane steel frame fire finite element method geometric nonlinearity

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Dynamic analysis of rail transit elevated bridge with ladder track

He XIA, Yushu DENG, Yongwei ZOU, Guido DE ROECK, Geert DEGRANDE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1, Pages 2-8 doi: 10.1007/s11709-009-0001-x

Abstract: In this paper, a dynamic analysis model of an elevated bridge with ladder tracks under moving train loadThe whole process of a train running through an elevated bridge at different speeds is simulated.The dynamic responses of the elevated bridge with ladder track and the running safety and comfort indexCompared with the dynamic responses of an elevated bridge with ordinary non-ballasted slab track, theladder track’s effect on reducing the vibration of an elevated bridge is analyzed.

Keywords： rail transit elevated bridge ladder track dynamic response

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Running train induced vibrations and noises of elevated railway structures and their influences on environment

He XIA, Fei GAO, Xuan WU, Nan ZHANG, Guido DE ROECK, Geert DEGRANDE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1, Pages 9-17 doi: 10.1007/s11709-009-0010-9

Abstract: The vibrations and noises of elevated railway structures have been cause for concern due to their effectson the environment and the people living near elevated lines.In this paper, the main structural features of some new elevated bridges and station hall were introducedThe generation mechanism of vibrations and noise of elevated structures induced by trains were investigatedThe noise induced by different types of elevated bridges, their influences on the environment and the

Keywords： railway elevated structure bridge station vibration noise environment

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Effect of concrete creep and shrinkage on tall hybrid-structures and its countermeasures

Pusheng SHEN, Hui FANG, Xinhong XIA

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2, Pages 234-239 doi: 10.1007/s11709-009-0020-7

Abstract: Based on the concrete creep and shrinkage calculation formula in American Concrete Institute (ACI) code, with the assumption that loads are increased linearly in members, the creep and shrinkage effects ofThe effects of steel ratio on members creep are analyzed by age-adjusted module method (AEMM).

Keywords： creep shrinkage construction process hybrid-structure

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Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1, Pages 81-91 doi: 10.1007/s11709-018-0468-4

Abstract: However, the behavior of such members under the influence of elevated temperatures is still unknown.examines the deflection behavior of the carbon fiber reinforced polymer(CFRP) prestressed concrete beam at elevatedIn this article, an analytical model is developed which integrates the temperature dependent changeswith CFRP subjected to practical elevated temperatures.The results of the model correlated reasonably with the finite element model and the real behavior.

Keywords： FRP CFRP concrete elevated temperatures deflections prestress

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Applicability of the Arrhenius model for Ammonia Oxidizing Bacteria subjected to temperature time gradients

Alberto MANNUCCI,Giulio MUNZ,Gualtiero MORI,Claudio LUBELLO,Jan A. OLESZKIEWICZ

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6, Pages 988-994 doi: 10.1007/s11783-014-0751-0

Abstract: The aim of this work is to identify the range of applicability of Arrhenius type temperature dependencefor Ammonia Oxidizing Bacteria (AOB) subjected to temperature time gradients through continuous titrimetrictitrimetric reactor in the temperature range 10°C–20°C.model for temperature dependency of AOB growth kinetics were assessed.The Arrhenius model was found to be accurate only with temperature gradients lower than 2°C·h .

Keywords： nitrification rate temperature effect continuous titrimetric tests time-gradient temperature variations

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Creep-fatigue crack growth behavior in GH4169 superalloy

Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3, Pages 369-376 doi: 10.1007/s11465-018-0489-7

Abstract: This study aims to examine the crack growth behavior of turbine disc GH4169 superalloy under creep-fatigueThe grain boundaries oxidize during the dwell process, thereby inducing an intergranular creep-fatigueConsequently, a modified model based on the Saxena equation was proposed by introducing a distributionobservation confirmed that the small grain size and high volume fraction of the d phase led to a fast creep-fatigueand presence of the d phase at the grain boundary, increased the amount of weakened interface at high temperature

Keywords： crack growth rate creep-fatigue GH4169 superalloy CT specimen dwell time

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Title Author Date Type Operation

Elevated temperature creep model of parallel wire strands

Journal Article

Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature andelevated pressure

Journal Article

A model for creep life prediction of thin tube using strain energy density as a function of stress triaxialityunder quasi-static loading employing elastic-creep & elastic-plastic-creep deformation

Tahir MAHMOOD, Sangarapillai KANAPATHIPILLAI, Mahiuddin CHOWDHURY

Journal Article

Creep of brazed plate-fin structures in high temperature compact heat exchangers

Shantung TU, Guoyan ZHOU

Journal Article

Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Journal Article

Creep and recovery behaviors of magnetorheological elastomers

Weihua LI, Yang ZHOU, Tongfei TIAN, Gursel ALICI,

Journal Article

Responses of microbial interactions to elevated salinity in activated sludge microbial community