A 3D RITSS approach for total stress and coupled-flow large deformation problems using ABAQUS

Ullah, Shah Neyamat; Hou, Lee Fook; Satchithananthan, Umashankaran; Chen, Zongrui; Gu, Hai

doi:10.1016/j.compgeo.2018.01.018

Cited by 29 publications

(5 citation statements)

References 34 publications

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“…The analysis divides the whole process into a series of small strain increments, each having sufficiently small timestep to avoid mesh distortion, followed by remeshing and interpolation of field variables from old to new meshes. The applications and accuracy of the method in modelling of various geotechnical engineering problems have been discussed in many studies (e.g., Chatterjee et al, 2012, Wang et al, 2013, Ullah et al, 2018, Zhang et al, 2019.…”

Section: Methodsmentioning

confidence: 99%

Scale effect on bearing capacity of shallow foundations on strain-softening clays

Fang

Zhang

2021

Computers and Geotechnics

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Progressive failure is common in many natural clays of strain-softening behavior and may affect the bearing capacity of foundations placed on such soils. The progressive failure might be insignificant for small structures where the mobilized strains are generally uniform within the failed soil mass. This places a demerit to the applications of knowledge obtained from physical model tests to prototype. The study aims to understand and quantify this scale effect on bearing capacity of shallow foundations on strain-softening clays, with a numerical investigation using a large deformation finite element analysis. The progressive failure is numerically replicated and the controlling parameters for the bearing capacity have been discussed. A correction factor is introduced which is inversely proportional to the foundation size normalized by the proposed characteristic length. An empirical relationship of the correction factor and the normalized foundation size has been obtained via the numerical data, which may improve the design of shallow foundations on strain-softening clays.

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Section: Methodsmentioning

confidence: 99%

Scale effect on bearing capacity of shallow foundations on strain-softening clays

Fang

Zhang

2021

Computers and Geotechnics

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“…Table 7 shows the coefficients of the Ogden model with a strain range of 100%, which is a material model used to describe nonlinear material constants. The ABAQUS commercial software was used [20][21][22]. Figure 8 shows an image of the analysis results.…”

Section: Methodsmentioning

confidence: 99%

Optimization of Shape Design of Grommet through Analysis of Physical Properties of EPDM Materials

Kim

Hwang²,

Jeon

2019

Applied Sciences

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Ethylene propylene diene monomer (EPDM) has superior mechanical properties, water resistance, heat resistance, and ozone resistance. It can be applied to various products owing to its low hardness and high slip resistance properties. A grommet is one of the various products made using EPDM rubber. It is a main component of automobiles, in which it protects wires throughout the inside and outside of a vehicle body. The grommet, made of EPDM, has different mounting performance depending on the process parameters and the shape of the grommet. This study conducted optimization to improve the mounting performance of a grommet using EPDM materials. The physical properties of the main molding materials were investigated according to process parameters. A grommet was fabricated according to the process parameters of fabrication. Insertion force and separation force were examined through experiments. Nonlinear material constants were determined through uniaxial and biaxial tensile tests. The nonlinear analysis of the grommet was conducted, and a compound design that incorporated the shape parameters for the minimum load of each part was derived. Then, additional nonlinear analysis was performed. This was followed by a comparative analysis of the actual model through experimental evaluation.

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“…Various large deformation numerical methods have been developed and used to explore pipe-soil interaction, based on traditional finite element methods or the recently developed meshfree/particle methods. The former category includes the Coupled Eulerian-Lagrangian (CEL) approach [26,27], the sequential limit analysis (SLA) approach [28][29][30], and the Remeshing and Interpolation Technique with Small Strain (RITSS) method [31][32][33][34][35][36][37][38] which falls in the category of Arbitrary Lagrangian-Eulerian (ALE) approach [39,40]. Wang et al [26] compared the performance of CEL, RITSS, and an efficient ALE (EALE) approach, concluding that for quasi-static problems with contact interfaces, the CEL model required smaller elements, so greater number of degrees of freedom, to achieve comparable accuracy of Lagrangian-based approaches (i.e., RITSS and EALE).…”

Section: Introductionmentioning

confidence: 99%

“…The RITSS method proposed by Hu and Randolph [48] enables a large deformation analysis by dividing the whole displacement analysis into a series of small deformation increments, followed by remeshing and interpolation of solution variables from old to new meshes. The RITSS method has been used successfully in the past for the modelling of partially embedded pipes [31][32][33][34][35][36][37][38] and some other large deformation geotechnical problems (e.g., anchors, landslides etc.) [49][50][51][52][53][54][55][56][57][58].…”

Section: Introductionmentioning

confidence: 99%

Large deformation coupled analysis of embedded pipeline – Soil lateral interaction

et al. 2021

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A 3D RITSS approach for total stress and coupled-flow large deformation problems using ABAQUS

Cited by 29 publications

References 34 publications

Scale effect on bearing capacity of shallow foundations on strain-softening clays

Scale effect on bearing capacity of shallow foundations on strain-softening clays

Optimization of Shape Design of Grommet through Analysis of Physical Properties of EPDM Materials

Large deformation coupled analysis of embedded pipeline – Soil lateral interaction

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