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Structure improvement and strength finite element analysis of VHP welded rotor of 700°C USC steam turbine

Jinyuan SHI,Zhicheng DENG,Yong WANG,Yu YANG

Frontiers in Energy 2016, Volume 10, Issue 1,   Pages 88-104 doi: 10.1007/s11708-015-0387-1

Abstract: The optimized structure strength design and finite element analysis method for very high pressure (VHPThe structure design feature, the mechanical models and the typical position of stress analysis of theThe strength design criteria and strength analysis results of the welded rotor are given.The results show that the strength design of improved structure of the VHP welded rotor of the 700°C

Keywords： 700°C ultra-super-critical unit     steam turbine     very high pressure rotor     structure strength design     strengthdesign criteria     finite element analysis    

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Out-of-plane elastic buckling load and strength design of space truss arch with a rectangular section

Senping WANG; Xiaolong LIU; Bo YUAN; Minjie SHI; Yanhui WEI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1141-1152 doi: 10.1007/s11709-022-0866-5

Abstract: Secondly, the design formulas to predict the out-of-plane elastoplastic stability strength of space trussBy assuming that all components of space truss circular arches bear only axial force, the design formulasFinally, the bearing capacity design equations of space truss arches are proposed under vertical uniform

Keywords： torsional stiffness     strength design     elastic buckling     space truss arches     out-of-plane    

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Displacement-based seismic design of high-strength concrete frame columns

ZHANG Guojun, LIU Jianxin, LU Xilin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 93-101 doi: 10.1007/s11709-008-0006-x

Abstract: Based on the testing results of 108 high-strength concrete columns under constant axial loading and horizontalthe end the minimum confining reinforcement characteristic values in the dense hoop regions of high-strengthconcrete columns are presented by comparatively analysis, and compared with ones in the design code

Keywords： horizontal cyclic     longitudinal reinforcement     design     loading     constant    

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An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1654-1654 doi: 10.1007/s11709-020-0622-7

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Shear design of high strength concrete prestressed girders

Emad L. LABIB,Hemant B. DHONDE,Thomas T. C. HSU,Y. L. MO

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 373-387 doi: 10.1007/s11709-014-0087-7

Abstract: Normal strength prestressed concrete I-girders are commonly used as the primary superstructure componentsHowever, shear design guidelines for high strength PC girders are not available in the current structuralcontribution ( ) as a function of concrete strength ( ).concrete strength up to 117 MPa (17000 psi) ensuring satisfactory ductility.of high strength PC girders as the AASHTO LRFD (2010) code provisions.

Keywords： shear design     high strength concrete     prestressed girders     full-scale tests    

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Empirical models and design codes in prediction of modulus of elasticity of concrete

Behnam VAKHSHOURI, Shami NEJADI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 38-48 doi: 10.1007/s11709-018-0479-1

Abstract: Modulus of Elasticity (MOE) is a key parameter in reinforced concrete design.Out of range estimation of MOE in the existing codes of practice strongly affect the design and performanceincludes: (a) evaluation and comparison of the existing analytical models to estimating the MOE in normal strengthaddition, a wide range of experimental databases and empirical models to estimate the MOE from compressive strength

Keywords： modulus of elasticity     normal strength normal weight concrete     empirical models     design codes     compressivestrength     density    

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Compressive strength prediction and optimization design of sustainable concrete based on squirrel search

Frontiers of Structural and Civil Engineering   Pages 1310-1325 doi: 10.1007/s11709-023-0997-3

Abstract: The complex relationship between influential factors and concrete compressive strength makes the predictionand estimation of compressive strength difficult.Instead of the traditional compressive strength test, this study combines five novel metaheuristic algorithmswith extreme gradient boosting (XGB) to predict the compressive strength of green concrete based onFinally, the developed SSA-XGB considered the effects of all the input factors on the compressive strength

Keywords： sustainable concrete     fly ash     slay     extreme gradient boosting technique     squirrel search algorithm     parametric analysis    

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Shear-flexural strength mechanical model for the design and assessment of reinforced concrete beams subjected

Antonio MARÍ,Antoni CLADERA,Jesús BAIRÁN,Eva OLLER,Carlos RIBAS

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 337-353 doi: 10.1007/s11709-014-0081-0

Abstract: A mechanical model recently developed for the shear strength of slender reinforced concrete beams withpresented and extended to elements with uniformly distributed loads, specially focusing on practical designThe shear strength is considered to be the sum of the shear transferred by the concrete compression chorddetailed application example has been presented, obtaining each contributing component to the shear strength

Keywords： shear strength     mechanical model     reinforced concrete     design     assessment     shear tests    

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An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1653-1653 doi: 10.1007/s11709-019-0578-7

Abstract: However, the E-modulus and strength of such members at high service temperatures is still unknown.Modulus and strength of FRP at high service temperatures are highly required parameters for full designknowledge and application of this could lead to a cost effective and practical consideration in fire safety designThus, this paper proposes design methods for calculating the E-modulus and strength of FRP members atIt was found that the proposed design methods conservatively estimate the E-modulus and strength of FRP

Keywords： concrete     fiber reinforced polymer     E-modulus     strength     temperatures    

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Probability strength design of steam turbine blade and sensitivity analysis with respect to random parameters

DUAN Wei

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 107-115 doi: 10.1007/s11708-008-0018-1

Abstract: To improve the reliability of blade design, it is necessary to take these stochastic parameters intosurface method and Monte Carlo method is an ideal way for the reliability analysis and probability strengthdesign of the blade.

Keywords： Probability sensitivity     sensitivity analysis     number     cross-section     statistical    

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State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 569-585 doi: 10.1007/s11709-020-0607-6

Abstract: With the recent development of material science, high strength steel (HSS) has become a practical solutionThe current codes for design of bearing-type bolted connections of steel constructions were establishedthose of conventional steels, more works should be done to develop the appropriate approach for the designThe previous research on failure modes, bearing resistance and the design with consideration of boltfor the design of bolted connections in HSS while AISC 360-16 may overestimate the bearing resistance

Keywords： High strength steel     bolted connection     bearing behavior     design codes    

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Lightweight design of an electric bus body structure with analytical target cascading

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0718-y

Abstract: In this study, a lightweight design of a newly developed multi-material electric bus body structure isBy proposing an ATC-based two-level optimization strategy, the original lightweight design problem issubsystem-level optimization model is related to the sub-structural performance objective with sub-structureCompared with the initial design, the total mass is reduced by 49 kg, and the torsional stiffness isIn addition, the obtained design is also validated through strength analysis.

Keywords： electric vehicle     body in white (BIW)     lightweight     analytical target cascading (ATC)    

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Development of mix design method based on statistical analysis of different factors for geopolymer concrete

Paramveer SINGH; Kanish KAPOOR

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1315-1335 doi: 10.1007/s11709-022-0853-x

Abstract: The 2D contour plots were used to setup the mix design method to achieve the target compressive strengthThe observed experimental compressive strength results validate the mix design method by more than 90%of their target strength.Furthermore, the current study concluded that the required compressive strength can be achieved by varyingany factor in the mix design.

Keywords： geopolymer concrete     mix design     fly ash     response surface methodology     compressive strength     stress−    

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Enhanced methane recovery and exoelectrogen-methanogen evolution from low-strength wastewater in an up-flow

Zechong Guo, Lei Gao, Ling Wang, Wenzong Liu, Aijie Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1074-3

Abstract:

Methane yield increased 22 times from low-strength wastewater by

Conductive fillers altered methanogens structure

Keywords： Low-strength wastewater     Methane production     Conductive filler     Microbial community structure    

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Strength reduction factors for structural rubbercrete

Bashar S. MOHAMMED,N. J. AZMI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 270-281 doi: 10.1007/s11709-014-0265-7

Abstract: , which has been developed and reported in this paper, is designed and executed to provide such mix design, flexural strength, splitting tensile strength and modulus of elasticity.Influence of mix design parameters such as percentage of crumb rubber replacement, cement content, waterEquations for the reduction factors (RFs) for compressive strength, flexural strength, splitting tensilestrength and modulus of elasticity have been developed.

Keywords： crumb rubber     recycled tire     mix design     reduction factor     strength     modulus elasticity    

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Title Author Date Type Operation

Structure improvement and strength finite element analysis of VHP welded rotor of 700°C USC steam turbine

Jinyuan SHI,Zhicheng DENG,Yong WANG,Yu YANG

Journal Article

Out-of-plane elastic buckling load and strength design of space truss arch with a rectangular section

Senping WANG; Xiaolong LIU; Bo YUAN; Minjie SHI; Yanhui WEI

Journal Article

Displacement-based seismic design of high-strength concrete frame columns

ZHANG Guojun, LIU Jianxin, LU Xilin

Journal Article

An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Journal Article

Shear design of high strength concrete prestressed girders

Emad L. LABIB,Hemant B. DHONDE,Thomas T. C. HSU,Y. L. MO

Journal Article

Empirical models and design codes in prediction of modulus of elasticity of concrete

Behnam VAKHSHOURI, Shami NEJADI

Journal Article

Compressive strength prediction and optimization design of sustainable concrete based on squirrel search

Journal Article

Shear-flexural strength mechanical model for the design and assessment of reinforced concrete beams subjected

Antonio MARÍ,Antoni CLADERA,Jesús BAIRÁN,Eva OLLER,Carlos RIBAS

Journal Article

An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Journal Article

Probability strength design of steam turbine blade and sensitivity analysis with respect to random parameters

DUAN Wei

Journal Article

State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

Journal Article

Lightweight design of an electric bus body structure with analytical target cascading

Journal Article

Development of mix design method based on statistical analysis of different factors for geopolymer concrete

Paramveer SINGH; Kanish KAPOOR

Journal Article

Enhanced methane recovery and exoelectrogen-methanogen evolution from low-strength wastewater in an up-flow

Zechong Guo, Lei Gao, Ling Wang, Wenzong Liu, Aijie Wang

Journal Article

Strength reduction factors for structural rubbercrete

Bashar S. MOHAMMED,N. J. AZMI

Journal Article