Showing papers by "Rodrigo Salgado published in 2021"
TL;DR: In this article, the results and analyses of uniaxial compression experiments performed on three silica sands were presented and analyzed using 3D tomography data of the samples obtained from the XRM at different stress levels.
Abstract: This paper presents the results and analyses of uniaxial compression experiments performed on three silica sands. The sands have comparable particle-size distributions, but their particles differ in morphology and strength. Cylindrical samples of the three sands were compressed in a loading device placed inside an X-ray microscope (XRM) and scanned at multiple stress levels during uniaxial compression. 3D tomography data of the samples obtained from the XRM at different stress levels were then analyzed to obtain the distributions of particle size, particle morphology, and interparticle contact normals within the sample. Results indicate that: (1) the compressibility of the sands loaded under uniaxial compression is closely tied to particle morphology and strength and (2) the anisotropy in the orientations of interparticle contact normals generally increases with axial stress; however, this increase is limited by the occurrence of particle crushing in the sample.
14 citations
TL;DR: In this paper, only limited research has been done on base geometry effects on pile base resistance, design methods used in practice for full-displacement, partialdisplacements, and nondisplacemen.
Abstract: Because only limited research has been done on base geometry effects on pile base resistance, design methods used in practice for full-displacement, partial-displacement, and nondisplacemen...
11 citations
TL;DR: The paper addresses the modifications required for the implementation of the B-bar method in GIMP and demonstrates its efficacy in mitigating locking using two benchmark problems: the Cook’s membrane problem and the limit bearing capacity of a footing in a Tresca soil at small settlements.
7 citations
TL;DR: When penetrometers or probes are pushed into sand, complex displacement fields, strain fields, and shear band patterns develop as discussed by the authors, and deep and shallow penetration processes in sands generate subs...
Abstract: When penetrometers or probes are pushed into sand, complex displacement fields, strain fields, and shear band patterns develop. Deep and shallow penetration processes in sands generate subs...
5 citations
TL;DR: In this article, a coupled material point method (MPM) formulation for the analysis of cone penetration in clays is presented, based on the generalized interpolation material point (GIMP) method.
Abstract: This study presents a coupled material point method (MPM) formulation for the analysis of cone penetration in clays. The formulation is based on the generalized interpolation material point...
5 citations
TL;DR: In this paper, the results of analyses performed to demonstrate the usefulness of constitutive model integration, limit analysis, and large deformation analyses have been instrumental in the development of strategies for the solution of the boundary-value problems of geomechanics.
5 citations
TL;DR: The study illustrates the robustness of the proposed integration scheme and successful application of the soil model, indicating that the use of such complex soil models may be useful for realistic analyses of geotechnical problems.
4 citations
TL;DR: In this paper, the majority of offshore wind turbines are used for renewable clean energy, and there has been rapid growth in the development of off-shore wind energy resources in recent years.
Abstract: Due to the increasing demand for renewable clean energy, there has been rapid growth in the development of offshore wind energy resources in recent years. The majority of offshore wind turbines are...
4 citations
05 May 2021
TL;DR: In this paper, the authors presented preliminary results from the numerical simulation of cone penetration in Tresca material using two variations of the generalized interpolation material point method (GIMP), uniform GIMP and contiguous particle GIMMP, which were compared with results published in the literature to illustrate the efficacy and accuracy of using the proposed numerical scheme.
Abstract: This paper presents preliminary results from the numerical simulation of cone penetration in Tresca material. The simulations were performed using two variations of the generalized interpolation material point method (GIMP), uniform GIMP and contiguous particle GIMP. A moving-compressible structured irregular background grid with adaptive material point splitting was used for computational efficiency. The non-linear B-bar method was used for mitigating volumetric locking. The obtained results were compared with results published in the literature to illustrate the efficacy and accuracy of using the proposed numerical scheme.
2 citations
06 May 2021
2 citations
06 May 2021
06 May 2021
TL;DR: In this article, the authors report the results of a live load test performed on the Sagamore Parkway bridge over the Wabash River, which was constructed from 2016 to 2018.
Abstract: In this paper, we report the results of a live load test performed on the Sagamore Parkway bridge over the Wabash River, Indiana. The seven-span concrete bridge was constructed from 2016 to 2018 to...