Title:
Simulation of compound anchor intrusion in dry sand by a hybrid FEM+SPH method

dc.contributor.author He, Haozhou
dc.contributor.author Karsai, Andras
dc.contributor.author Liu, Bangyuan
dc.contributor.author Hammond III, Frank L.
dc.contributor.author Goldman, Daniel I.
dc.contributor.author Arson, Chloé
dc.contributor.corporatename Georgia Institute of Technology. School of Civil and Environmental Engineering en_US
dc.contributor.corporatename Georgia Institute of Technology. School of Mechanical Engineering en_US
dc.date.accessioned 2022-11-07T13:49:19Z
dc.date.available 2022-11-07T13:49:19Z
dc.date.issued 2022-09
dc.description Preprint submitted to Computers and Geotechnics en_US
dc.description.abstract The intrusion of deformable compound anchors in dry sand is simulated by coupling the Finite Element Method (FEM) with Smoothed Particle Hydrodynamics (SPH). This novel approach can calculate granular flows at lower computational cost than SPH alone. The SPH and FEM domains interact through reaction forces calculated from balance equations and are assigned the same soil constitutive model (Drucker-Prager) and the same constitutive parameters (measured or calibrated). Experimental force-displacement curves are reproduced for penetration depths of 8 mm or more (respectively, 20 mm or more) for spike-shaped (respectively, fan-shaped) anchors with 1 to 6 blades. As the number of blades increases, simulations reveal that the granular flow under the anchor deviates from the vertical and that the horizontal granular flow transitions from orthoradial to radial. We interpret the strain field distribution as the result of soil arching, i.e., the transfer of stress from a yielding mass of soil onto adjoining stationary soil masses. Arching is fully active when the radial distance between blade end points is less than a critical length. In that case, the normal stress that acts on the compound anchor at a given depth reaches the normal stress that acts on a disk-shaped anchor of same radius. A single-blade anchor produces soil deformation and failure similar to Prandtl’s foundation sliding model. Multiblade anchors produce a complex failure mechanism that combines sliding and arching. en_US
dc.identifier.citation He, H., et al. (2022) "Simulation of compound anchor intrusion in dry sand by a hybrid FEM+SPH method". Computers and Geotechnics [SUBMITTED] en_US
dc.identifier.uri http://hdl.handle.net/1853/67544
dc.subject Compound anchors en_US
dc.subject Cohesionless granular medium en_US
dc.subject Intrusion en_US
dc.subject Smoothed Particle Hydrodynamics en_US
dc.subject Finite Element Method en_US
dc.subject Arching Effects en_US
dc.title Simulation of compound anchor intrusion in dry sand by a hybrid FEM+SPH method en_US
dc.type Text
dc.type.genre Pre-print
dspace.entity.type Publication
local.contributor.author Goldman, Daniel I.
local.contributor.author Arson, Chloé
local.contributor.corporatename School of Civil and Environmental Engineering
local.contributor.corporatename College of Engineering
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relation.isAuthorOfPublication ce5325f0-830f-4636-bc90-7527fd99005b
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relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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