Experimental Evaluation and Finite-Element Simulations of Explosive Airblast Tests on Clay Soils

Busch, Courtney L.; Aimone-Martin, Catherine T.; Tarefder, Rafiqul A.

doi:10.1061/(asce)gm.1943-5622.0000629

Cited by 17 publications

(1 citation statement)

References 14 publications

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“…It should be noted that the NCHRP Report 350 strong soil is most similar to granular (MASH strong) soil. This constitutive model has been recognized as the most appropriate (granular) soil model within LS-DYNA for simulating the elastoplastic behavior of soil, including the influence of soil confinement, strain rate, strain softening or damage, pore water pressure, and moisture [38][39][40][41].…”

Section: Granular (Mash Strong) Soilmentioning

confidence: 99%

Modeling Dynamics of Laterally Impacted Piles in Gravel Using Erosion Method

Yosef,

Faller,

Fang

et al. 2023

Geotechnics

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Understanding the dynamic interaction between piles and the surrounding soil under vehicular impacts is essential for effectively designing and optimizing soil-embedded vehicle barrier systems. The complex behavior of pile–soil systems under impact loading, attributed to the soil’s nonlinear behavior and large deformation experienced by both components, presents significant simulation challenges. Popular computation techniques, such as the updated Lagrangian finite element method (UL-FEM), encounter difficulties in scenarios marked by large soil deformation, e.g., impacts involving rigid piles. While mesh-free particle and discrete element methods offer another option, their computational demands for field-scale pile–soil impact simulations are considerable. We introduce the erosion method to bridge this gap by integrating UL-FEM with an erosion algorithm for simulating large soil deformations during vehicular impacts. Validation against established physical impact tests confirmed the method’s effectiveness for flexible and rigid pile failure mechanisms. Additionally, this method was used to examine the effects of soil mesh density, soil domain sizes, and boundary conditions on the dynamic impact response of pile–soil systems. Our findings provide guidelines for optimal soil domain size, mesh density, and boundary conditions. This investigation sets the stage for improved, computationally efficient techniques for the pile–soil impact problem, leading to better pile designs for vehicular impacts.

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Section: Granular (Mash Strong) Soilmentioning

confidence: 99%