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- W2147475829 abstract "The estimation of the elastic soil modulus from many in situ field test devices currently rely on the continuum theory and assumptions about linear elasticity that are somewhat ill-posed. To improve the understanding of in situ field measurement of elastic modulus using intelligent roller compactors and light-weight deflectometers (LWDs), a complete understanding of the contact problems formed through the use of these devices is needed for a wide range of soils. The varying material properties of cohesionless and cohesive soils can have dramatic effects on the assumed stress distributions, contact areas, and surface deformations. Investigations are conducted by using the discrete-element method (DEM) to investigate the relationships between soil properties and the mechanical responses for both plate (simulated LWD) and drum-roller loading. Simulations of purely cohesionless granular soils are shown to exhibit substantially different stress and strain fields compared to simulations of cohesive soils. This paper demonstrates the ability of DEM to accurately model macroscale features from variable microstructure and interactions. Comparisons between finite element models and predictions are made for soils with varying abilities to transmit tensile forces." @default.
- W2147475829 created "2016-06-24" @default.
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- W2147475829 date "2012-01-01" @default.
- W2147475829 modified "2023-10-09" @default.
- W2147475829 title "Understanding the Soil Contact Problem for the LWD and Static Drum Roller by Using the DEM" @default.
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- W2147475829 doi "https://doi.org/10.1061/(asce)em.1943-7889.0000310" @default.
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