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Demonstration of the Principle of Interaction between Plastic Volume Strain and Shear for Rock and Soil

Wang Jingtao

Strategic Study of CAE 2006, Volume 8, Issue 9, Pages 24-29

Abstract:

The paper proposed a principle of interaction between plastic volume strains of and shear for rockand soil.Especially, the manners of the interaction between plastic volume strain and shear strain, the directeffect of plastic volume strain on the resistance to shear, the conditions of generating contractionform of the interaction between the plastic volume strain and shear and its verification, and the fact

Keywords： principle of interaction between plastic volume strain and shear strain for rock and soil constitutiverelation of rock and soil pressure-sensitivity dilatancy

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The Principle of Interaction Between Plastic Volumetric and Shear Strains for Unsaturated Soils

Wang Jingtao

Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 11-15

Abstract:

In this paper, the principle of interaction between plastic volumetricand shear strains for rock and soil has been extended to the field of unsaturated soils. Two new interactions of suction-plastic volumetric strain and pore air pressure-plastic volumetricstrain appear in the unsaturated state of a soil besides the interaction between plastic volumetric In addition, it is theoretically proved by application of this principle of interaction that

Keywords： the principle of interaction between plastic volumetric and shear strains unsaturated soil matric suction the principle of effective stress

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Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Frontiers of Structural and Civil Engineering Pages 915-934 doi: 10.1007/s11709-023-0907-8

Abstract: A fictitious soil pile (FSP) model is developed to simulate the behavior of pipe piles with soil plugsundergoing high-strain dynamic impact loading.The developed model simulates the base soil with a fictitious hollow pile fully filled with a soil plugand soil plug is considered.The motions of the pile−soil system are solved by discretizing them into spring-mass model based on the

Keywords： fictitious soil pile soil plug pipe piles high-strain dynamic analysis one-dimensional wave theory

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Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3, Pages 293-293 doi: 10.1007/s11709-008-0100-0

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Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2, Pages 151-160 doi: 10.1007/s11709-008-0020-z

Abstract: the tri-axial shearing tests of unsaturated intact loess and based on the concept of comprehensive soilstructural potential, this paper reveals the changing laws of soil structural property under the tri-axialstress-strain relation.shearing contraction and shearing expansion, whereby indicating that there is a good linear relation betweenthe stress ratio and shearing expansion strain ratio.

Keywords： hardening shearing expansion unsaturated structural property mathematical expression

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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1595-7

Abstract:

● Mechanical behavior of MBT waste affected by loading rate was investigated.

Keywords： Mechanically and biologically treated waste Landfill Triaxial test Loading rate Axial strain Shear

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Damage detection in beam-like structures using static shear energy redistribution

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12, Pages 1552-1564 doi: 10.1007/s11709-022-0903-4

Abstract: In this study, a static shear energy algorithm is presented for the damage assessment of beam-like structuresAccording to the energy release principle, the strain energy of a damaged element suddenly changes whenTherefore, the change in the static shear energy is employed to determine the damage locations in beam-likeThe static shear energy is derived from the spectral factorization of the elementary stiffness matrixThe advantage of using shear energy as opposed to total energy is that only a few deflection data points

Keywords： damage detection beam structure strain energy static displacement variation energy damage index

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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: The model employs strain energy density and assumes that the uniaxial strain energy density of a componentcan be easily calculated and can be converted to multi-axial strain energy density by multiplying itFor comparison, an elastic-creep and elastic-plastic-creep finite element analysis (FEA) is performedto get multi-axial strain energy density of the component which is compared with the calculated strain

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

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Numerical simulation of the rockburst processes of a circular tunnel at different dilation angles

Wang Xuebin,Pan Yishan,Zhang Zhihui

Strategic Study of CAE 2010, Volume 12, Issue 2, Pages 40-46

Abstract: For rock elements exhibiting linear strain-softening behavior beyond the occurrence of failure and thenideal plastic behavior, the failure criterion is a composite Mohr-Coulomb criterion with tension cut-offResults show that with an increase of the dilation angle, the shear band becomes wider; the dog-ear orV-shaped rockburst notch becomes deeper; the number of failed elements is greater and the plastic zone, the angle between a shear band and the tangential line of the tunnel surface is higher.

Keywords： dilation angle circular tunnel rockburst shear band V-shaped notch shear strain volumetric strain

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The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3, Pages 265-269 doi: 10.1007/s11465-014-0311-0

Abstract: An important conclusion is drawn that the accumulated plastic strain is the main factor which determines

Keywords： residual stress analytical model strain plastic cutting parameter

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Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 210-216 doi: 10.1007/s11709-012-0165-7

Abstract: If stresses or forces are needed, these are easily determined by the value of the strain and the relevant

Keywords： steel stress-strain characteristics tension test strain design actual behavior improved design codes

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Ensemble unit and AI techniques for prediction of rock strain

Pradeep T; Pijush SAMUI; Navid KARDANI; Panagiotis G ASTERIS

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7, Pages 858-870 doi: 10.1007/s11709-022-0831-3

Abstract: The behavior of rock masses is influenced by a variety of forces, with measurement of stress and strainThe laboratory test for determining strain at each location within rock samples is expensive and difficultbut rock strain data are important for predicting failure of rock material.Additionally, the ensemble unit (EnU) may be utilized to evaluate rock strain.strain.

Keywords： prediction strain ensemble unit rank analysis error matrix

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Nonlinear elastic model for compacted clay concrete interface

R. R. SHAKIR, Jungao ZHU

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2, Pages 187-194 doi: 10.1007/s11709-009-0033-2

Abstract: model was developed to simulate the behavior of compacted clay concrete interface (CCCI) based on the principleA number of simple shear tests were conducted on CCCI to demonstrate different failure mechanisms; i.eThe clay soil used in the test was collected from the “Shuang Jang Kou” earth rockfill dam project.Mathematical relations were proposed between the shear at failure and water content in addition to thethe total shear displacement very well.

Keywords： interface modeling friction soil structure interface soil structure interaction simple shear test

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Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0731-1

Abstract: Blade strain distribution and its change with time are crucial for reliability analysis and residualTraditional strain measurements are achieved by strain gauges (SGs) in a contact manner at discrete positionsLimited optical measured displacement responses are utilized to reconstruct the full-field strain.The full-field strain distribution is in-time visualized.The high consistency between the reconstructed and measured results demonstrates the accurate strain

Keywords： aero-engine blade displacement response dynamic strain reconstruction mode shape strain gauge

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Strain and process engineering toward continuous industrial fermentation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1336-1353 doi: 10.1007/s11705-022-2284-6

Abstract: Most current biotechnology industries are based on batch or fed-batch fermentation processes, which often show low productivity and high production costs compared to chemical processes. To increase the economic competitiveness of biological processes, continuous fermentation technologies are being developed that offer significant advantages in comparison with batch/fed-batch fermentation processes, including: (1) removal of potential substrates and product inhibition, (2) prolonging the microbial exponential growth phase and enhancing productivity, and (3) avoiding repeated fermentation preparation and lowering operation and installation costs. However, several key challenges should be addressed for the industrial application of continuous fermentation processes, including (1) contamination of the fermentation system, (2) degeneration of strains, and (3) relatively low product titer. In this study, we reviewed and discussed metabolic engineering and synthetic biology strategies to address these issues.

Keywords： continuous fermentation productivity contamination strain degeneration metabolic engineering

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Title Author Date Type Operation

Demonstration of the Principle of Interaction between Plastic Volume Strain and Shear for Rock and Soil

Wang Jingtao

Journal Article

The Principle of Interaction Between Plastic Volumetric and Shear Strains for Unsaturated Soils

Wang Jingtao

Journal Article

Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Journal Article

Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Journal Article

Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Journal Article

Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Journal Article

Damage detection in beam-like structures using static shear energy redistribution

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

Numerical simulation of the rockburst processes of a circular tunnel at different dilation angles

Wang Xuebin,Pan Yishan,Zhang Zhihui

Journal Article

The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Journal Article

Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Journal Article

Ensemble unit and AI techniques for prediction of rock strain