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Influence of welding residual stresses on the ductile crack growth resistance of circumferentially cracked

Xiaobo REN, Odd M. AKSELSEN, B?rd NYHUS, Zhiliang ZHANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 217-223 doi: 10.1007/s11709-012-0169-3

Abstract: This paper focuses on the effect of welding residual stress on the ductile crack growth resistance ofThe complete Gurson model has been employed to calculate the ductile crack growth resistance.Results show that residual stresses reduce the ductile crack growth resistance.However, the effect of residual stresses on ductile crack growth resistance decreases with the increaseof crack growth.

Keywords： residual stress     ductile crack growth resistance     complete Gurson model     eigenstrain method    

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Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 323-329 doi: 10.1007/s11709-009-0041-2

Abstract: extension resistance curve, one of the fundamental fracture criteria in crack mechanics.extension resistance curve, to analyze crack propagation during the entire concrete fracture processThe variation of the crack extension resistance is mainly associated with the energy consumption in theThe crack extension resistance is then a function of the softening curve, which is a basic mechanicalThe relationship between the softening curve and the crack extension resistance curve is then analyzed

Keywords： concrete     fracture process zone     crack extension GR resistance     tension softening curve    

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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-fatigueCrack growth experiments were performed on compact tension specimens using trapezoidal waveform withThe crack growth rate of GH4169 superalloy significantly increased with dwell time.In addition, testing data under the same dwell time showed scattering at the crack growth rate.growth rate.

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

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Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 339-347 doi: 10.1007/s11709-010-0078-2

Abstract: In this paper, a concurrent simulation framework for fatigue crack growth analysis is proposed usingscale model for fatigue mechanism analysis and the extended finite element method (X-FEM) for fatigue crackgrowth simulation.The X-FEM greatly facilitates crack growth simulation without remeshing requirements ahead of the crackgrowth analysis.

Keywords： small time scale model     extended finite element method (X-FEM)     crack growth     multiaxial    

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Fracture resistance on aggregate bridging crack in concrete

ZHANG Xiufang, XU Shilang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 63-70 doi: 10.1007/s11709-007-0006-2

Abstract: In this investigation, the fracture resistance induced by aggregate bridging, denoted by GI-bridging,After this, we further present the calculated procedures of determining this fracture resistance fromUtilizing the obtained load against crack opening displacement curve, the value of G at any crack extensioninitial crack tip opening displacement reaches the characteristic crack opening displacement w0.The effects of material strength and specimen depth on this fracture resistance are also investigated
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An investigation on prevalent strategies for XFEM-based numerical modeling of crack growth in porous

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 914-936 doi: 10.1007/s11709-021-0750-8

Abstract: Crack growth modeling has always been one of the major challenges in fracture mechanics.Finally, the crack growth is modeled in a natural porous media (Fontainebleau sandstone).identically predict the stress distribution in the sample, the first strategy simulates only the initial crackExperimental tests showed that the second strategy is a more accurate strategy in predicting the preferred crackgrowth path and determining the maximum strength of the sample.

Keywords： numerical modeling     extended finite element method     porous media     crack growth     stress intensity factor    

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Some remarks on the engineering application of the fatigue crack growth approach under nonzero mean loads

Jorge Alberto Rodriguez DURAN,Ronney Mancebo BOLOY,Rafael Raider LEONI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 255-262 doi: 10.1007/s11465-015-0342-1

Abstract:

The well-known fatigue crack growth (FCG) curves are two-parameter dependents.the mathematical representation of these curves should be integrated between the initial and final crackK is almost always selected and, in these conditions, considered as the crack driving forceNumerical examples of crack growth analysis for cracks growing under nominal stresses of constant amplitudeThe resulting curves of crack size versus number of cycles (a vs.

Keywords： fatigue crack propagation modeling     life prediction     mean stress effects    

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Fatigue crack growth behavior of a 170 mm diameter stainless steel straight pipe subjected to combined

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 905-913 doi: 10.1007/s11709-021-0683-2

Abstract: Higher crack growth rate occurs because of this torsional load in addition to the bending load.The experimental crack depth was measured using alternating current potential drop technique.Afterward, the fatigue crack growth and crack pattern were discussed.As a result, fatigue crack growth predicted using analytical methods are in good agreement with experimental

Keywords： life     Delale and Erdogan method     RMS–SIF approach     stainless steel     torsion and bending load     fatigue crackgrowth    

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Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM

Sachin KUMAR,A. S. SHEDBALE,I. V. SINGH,B. K. MISHRA

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 420-440 doi: 10.1007/s11709-015-0305-y

Abstract: this paper, elasto-plastic XFEM simulations have been performed to evaluate the fatigue life of plane crack

Keywords： XFEM     von-Mises yield criterion     isotropic hardening     fatigue crack growth     J-integral    

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Application of the expanded distinct element method for the study of crack growth in rock-like materials

Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 121-131 doi: 10.1007/s11709-012-0151-0

Abstract: The expanded distinct element method (EDEM) was used to investigate the crack growth in rock-like materialsthat the EDEM model with the tensile-shear failure criterion has strong capabilities for modeling the growthResearch results demonstrated that sample failure primarily resulted from the growth of single cracksform of tensile wing cracks and shear secondary cracks) and the coalescence of two cracks due to the growthAdditionally, the inclination angle of the pre-existing crack clearly influences the final failure pattern

Keywords： expanded distinct element method (EDEM)     crack growth     rock-like material     tensile-shear failure criterion    

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Simulation of cohesive crack growth by a variable-node XFEM

Weihua FANG, Jiangfei WU, Tiantang YU, Thanh-Tung NGUYEN, Tinh Quoc BUI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 215-228 doi: 10.1007/s11709-019-0595-6

Abstract: It also allows modeling the equal stresses at both sides of the crack in the crack-tip as assumed inthe cohesive model, and is able to simulate the arbitrary crack-tip location.

Keywords： extended finite element method     cohesive zone model     sign function     crack propagation    

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Experimental research on ductile fracture criterion in metal forming

Song YU, Weiming FENG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 308-311 doi: 10.1007/s11465-011-0233-z

Abstract:

Ductile fracture criterion is key limitation parameter in material forming.utilized for providing the experimental values of the critical values at fracture, and 11 widely used ductilehigh triaxiality can be estimated successively using both Normalized Cockcroft-latham and the Brozzo ductile

Keywords： ductile fracture criteria     metal forming process     material experiment     stress triaxiality    

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Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 359-382 doi: 10.1007/s11709-015-0304-z

Abstract: This paper deals with the fatigue crack growth simulations of three-dimensional linear elastic cracksBoth temperature and displacement approximations are extrinsically enriched by Heaviside and crack frontCrack growth is modelled by successive linear extensions, and the end points of these linear extensionsare joined by cubic spline segments to obtain a modified crack front.Different crack geometries such as planer, non-planer and arbitrary spline shape cracks are simulated

Keywords： 3-D cracks     fatigue life     Paris law     thermal load     XFEM    

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Overcoming resistance to endocrine therapy in hormone receptor-positive human epidermal growth factor

Wenjie Zhu, Binghe Xu

Frontiers of Medicine 2021, Volume 15, Issue 2,   Pages 208-220 doi: 10.1007/s11684-020-0795-4

Abstract: New targeted therapies have been developed to overcome resistance to endocrine therapy (ET) and improve

Keywords： endocrine-resistant     HR+/HER2- advanced breast cancer     randomized clinical trials     meta-analysis     targeted therapy    

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A review on ductile mode cutting of brittle materials

Elijah Kwabena ANTWI, Kui LIU, Hao WANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 251-263 doi: 10.1007/s11465-018-0504-z

Abstract: Ductile mode cutting is a very promising way to achieve high quality and crack-free surfaces of brittleThus the study of ductile mode cutting of brittle materials has been attracting more and more effortsThis paper provides an overview of ductile mode cutting of brittle materials including ductile naturetransition, subsurface damage, as well as a detailed discussion of ductile mode cutting enhancement.It is believed that ductile mode cutting of brittle materials could be achieved when both crack-free

Keywords： ductile mode cutting     brittle materials     critical undeformed chip thickness     brittle-ductile transition    

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Title Author Date Type Operation

Influence of welding residual stresses on the ductile crack growth resistance of circumferentially cracked

Xiaobo REN, Odd M. AKSELSEN, B?rd NYHUS, Zhiliang ZHANG

Journal Article

Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Journal Article

Creep-fatigue crack growth behavior in GH4169 superalloy

Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG

Journal Article

Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

Journal Article

Fracture resistance on aggregate bridging crack in concrete

ZHANG Xiufang, XU Shilang

Journal Article

An investigation on prevalent strategies for XFEM-based numerical modeling of crack growth in porous

Journal Article

Some remarks on the engineering application of the fatigue crack growth approach under nonzero mean loads

Jorge Alberto Rodriguez DURAN,Ronney Mancebo BOLOY,Rafael Raider LEONI

Journal Article

Fatigue crack growth behavior of a 170 mm diameter stainless steel straight pipe subjected to combined

Journal Article

Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM

Sachin KUMAR,A. S. SHEDBALE,I. V. SINGH,B. K. MISHRA

Journal Article

Application of the expanded distinct element method for the study of crack growth in rock-like materials

Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO

Journal Article

Simulation of cohesive crack growth by a variable-node XFEM

Weihua FANG, Jiangfei WU, Tiantang YU, Thanh-Tung NGUYEN, Tinh Quoc BUI

Journal Article

Experimental research on ductile fracture criterion in metal forming

Song YU, Weiming FENG

Journal Article

Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Journal Article

Overcoming resistance to endocrine therapy in hormone receptor-positive human epidermal growth factor

Wenjie Zhu, Binghe Xu

Journal Article

A review on ductile mode cutting of brittle materials

Elijah Kwabena ANTWI, Kui LIU, Hao WANG

Journal Article