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Deformation Rate Ratio Criterion (DRRC) and Its Verification in Maoshan Tunnel Excavation

Li Shihui,Song Jun

Strategic Study of CAE 2002, Volume 4, Issue 6,   Pages 85-91

Abstract: Advance the basis for the hypothesis of deformation rate ratio criterion (DRRC) and the method for obtainingthe threshold of this criterion, and enumerate five typical cases for the application of this criterion

Keywords： open complex giant system     cave-in accident     deformation rate ratio criterion     typical information method    

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Deformation control criterion of shield tunnel under lateral relaxation of soft soil

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 780-795 doi: 10.1007/s11709-023-0944-3

Abstract: However, deformation control standards for such situations have not been clearly defined.Subsequently, a deformation control criterion is established.Based on the mechanical pattern of the segment structure and the acoustic emission, the deformation responseof a segment can be classified into three stages: elastic and quasi-elastic, damage, and rapid deformationHowever, the segment deformation must be controlled when the ellipticity is 2.71% to 3.12%; in this regard

Keywords： shield tunnel     lateral relaxation of soil     deformation control criterion of segment structure     model    

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Deformation field and crack analyses of concrete using digital image correlation method

Yijie HUANG, Xujia HE, Qing WANG, Jianzhuang XIAO

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1183-1199 doi: 10.1007/s11709-019-0545-3

Abstract: The study on the deformation distribution and crack propagation of concrete under axial compression wasThe main parameter in this test is the water-cement ( / ) ratio.Test results also showed that the transverse and shear deformation concentration areas (DCAs) were formed

Keywords： deformation filed distribution     crack development     digital image correlation method     mechanical properties     water-cement ratio     characteristics of deformation and crack    

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Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregatereplacement rate

Jingwei YING; Feiming SU; Shuangren CHEN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 302-315 doi: 10.1007/s11709-022-0803-7

Abstract: the water−cement ratio at the same time.RCA replacement rate.Correlation (DIC) method, and a self-made gravity loading experimental device was used for long-term deformationof RCA than by adjusting the water−cement ratio.concrete, while the replacement rate of RCA has a remarkable effect on the long-term deformation of the

Keywords： recycled concrete     beam     the replacement rate of recycled coarse aggregate     water–cement ratio     digital    

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Experimental research on the mixed sand ratio and initial dry density of weathered sand improved expansivesoil free load swelling rate

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Strategic Study of CAE 2014, Volume 16, Issue 2,   Pages 73-78

Abstract:

Through the indoor free load swelling rate test，Yichang City，a section of a highway reconstructionKey analysis free load swelling rate of a non-load time，the proportion of mixed sand，the relationshipbetween the initial dry density， experimental studies have shown that：Free load swelling rate is mainlyis not sensitive to the amount of sand mixed；in the same mixed sand ratio， weathered sand soil freesubgrade construction in progress when control of the initial dry density，to help reduce its swelling deformation

Keywords： expansive soils     weathered sand     initial dry density     mixing sand ratio     free load swelling rate    

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Design, Characterization, and 3D Printing of Cardiovascular Stents with Zero Poisson’s Ratio in LongitudinalDeformation Article

Chengjin Wang, Lei Zhang, Yongcong Fang, Wei Sun

Engineering 2021, Volume 7, Issue 7,   Pages 979-990 doi: 10.1016/j.eng.2020.02.013

Abstract: A stent with a zero Poisson’s ratio (ZPR) structure is designed, and a preliminary monofilament

Keywords： Additive manufacturing     3D printing     Screw extrusion     Cardiovascular stent     Zero Poisson’s ratio    

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Ultrasonic assisted EDM: Effect of the workpiece vibration in the machining characteristics of FW4 Welded Metal

Mohammadreza SHABGARD, Hamed KAKOLVAND, Mirsadegh SEYEDZAVVAR, Ramin Mohammadpour SHOTORBANI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 419-428 doi: 10.1007/s11465-011-0246-7

Abstract: The studied process characteristics included the material removal rate (MRR), tool wear ratio (TWR),The experimental results show that in short pulse on-times, material removal rate in the US-EDM process

Keywords： electrical discharge machining (EDM)     material removal rate (MRR)     tool wear ratio (TWR)     surface roughness    

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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.Accuracy predicting surface and internal failure in plastic deformation process affects on the technologyproviding the experimental values of the critical values at fracture, and 11 widely used ductile fracture criterion

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

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A new fracture criterion for peridynamic and dual-horizon peridynamics

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 629-641 doi: 10.1007/s11709-017-0447-1

Abstract: A new fracture criterion based on the crack opening displacement for peridynamic (PD) and dual-horizonWhen the relative deformation of the PD bond between the particles reaches the critical crack tip openingThe performance of the new fracture criterion is demonstrated by four examples, i.e. a bilateral crack

Keywords： Castigliano’s theorem     breaking energy     critical extension     XFEM     COD     PD-COD    

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Resistance of large deformation of the Wushaoling Tunnel F7 soft fault

ZHAO Xufeng, CHEN Haiming, WANG Chunmiao

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 123-127 doi: 10.1007/s11709-007-0013-3

Abstract: The measurements and techniques are proposed to resist the deformation.

Keywords： F7     deformation     appropriate     construction     mechanical    

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Numerical modeling of nonlinear deformation of polymer composites based on hyperelastic constitutive

Qingsheng YANG, Fang XU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 284-288 doi: 10.1007/s11465-009-0067-0

Abstract: reinforced polymer (FRP) composites exhibit nonlinear and hyperelastic characteristics under finite deformationhyperelastic behavior of fiber reinforced polymer composites using a micromechanical model and finite deformationThe local stress and deformation of a representative volume element are calculated by the nonlinear finiteNumerical examples are given to demonstrate hyperelastic behavior and deformation of the composites,

Keywords： composites     hyperelastic     finite deformation     homogenization     micromechanics    

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Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 73-75

Abstract: applies basic formula to the calculation of a relationship between the hydraulic pressure extremes ratioof hydraulic system and the extremes ratio efficiencies.This relationship shows that the greater the hydraulic pressure extremes ratio is, the lower the extremesratio efficiencies are.The article holds that the hydraulic pressure extremes ratio can be designed and chosen.

Keywords： hydraulic pressure extremes ratio     extremes ratio efficiencies     hydraulic system    

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The Characterization System of the Ballistic Performance of Armor Magnesium Alloys

Cai Hongnian,Tan Chengwen,Wang Fuchi,Chen Zhiyong

Strategic Study of CAE 2006, Volume 8, Issue 2,   Pages 30-33

Abstract:

The absorbed energy property and deformation characteristic of magnesium alloy under high strain rateconnected with materials' ballistic performance closely such as dynamic strength, absorbed energy rate, adiabatic shear deformation localization and dynamic hardness are discussed primarily.

Keywords： absorbed energy rate     adiabatic shear deformation localization     dynamic strength     dynamic hardness    

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A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture

Yongchang CAI, Hehua ZHU, Xiaoying ZHUANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 369-378 doi: 10.1007/s11709-013-0222-x

Abstract: In the framework of finite element meshes, a novel continuous/discontinuous deformation analysis (CDDACDDA is particularly suitable for modeling the fracture propagation because the switch from continuous deformationanalysis to discontinuous deformation analysis is natural and convenient without additional procedures

Keywords： fracture     crack     propagation     deformable block     continuous/discontinuous deformation analysis (CDDA)    

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Calculation methods of the crack width and deformation for concrete beams with high-strength steel bars

Jianmin ZHOU, Shuo CHEN, Yang CHEN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 316-324 doi: 10.1007/s11709-013-0211-0

Abstract: groups of concrete beams reinforced with high-strength steel bars were tested, and the crack width and deformation

Keywords： concrete beam     high-strength steel bar     crack width     deformation    

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Title Author Date Type Operation

Deformation Rate Ratio Criterion (DRRC) and Its Verification in Maoshan Tunnel Excavation

Li Shihui,Song Jun

Journal Article

Deformation control criterion of shield tunnel under lateral relaxation of soft soil

Journal Article

Deformation field and crack analyses of concrete using digital image correlation method

Yijie HUANG, Xujia HE, Qing WANG, Jianzhuang XIAO

Journal Article

Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregatereplacement rate

Jingwei YING; Feiming SU; Shuangren CHEN

Journal Article

Experimental research on the mixed sand ratio and initial dry density of weathered sand improved expansivesoil free load swelling rate

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Journal Article

Design, Characterization, and 3D Printing of Cardiovascular Stents with Zero Poisson’s Ratio in LongitudinalDeformation

Chengjin Wang, Lei Zhang, Yongcong Fang, Wei Sun

Journal Article

Ultrasonic assisted EDM: Effect of the workpiece vibration in the machining characteristics of FW4 Welded Metal

Mohammadreza SHABGARD, Hamed KAKOLVAND, Mirsadegh SEYEDZAVVAR, Ramin Mohammadpour SHOTORBANI

Journal Article

Experimental research on ductile fracture criterion in metal forming

Song YU, Weiming FENG

Journal Article

A new fracture criterion for peridynamic and dual-horizon peridynamics

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article

Resistance of large deformation of the Wushaoling Tunnel F7 soft fault

ZHAO Xufeng, CHEN Haiming, WANG Chunmiao

Journal Article

Numerical modeling of nonlinear deformation of polymer composites based on hyperelastic constitutive

Qingsheng YANG, Fang XU

Journal Article

Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Journal Article

The Characterization System of the Ballistic Performance of Armor Magnesium Alloys

Cai Hongnian,Tan Chengwen,Wang Fuchi,Chen Zhiyong

Journal Article

A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture

Yongchang CAI, Hehua ZHU, Xiaoying ZHUANG

Journal Article

Calculation methods of the crack width and deformation for concrete beams with high-strength steel bars

Jianmin ZHOU, Shuo CHEN, Yang CHEN

Journal Article