Hotspot formation due to shock-induced pore collapse in 1,3,5,7-tetranitro-1,3,5,7-tetrazoctane (HMX): Role of pore shape and shock strength in collapse mechanism and temperature
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DOI: 10.1063/5.0005872
Abstract: The shock to detonation transition in heterogeneous high energy density solids starts with the spatial localization of mechanical energy into so-called hotspots that form due to the interaction between the leading wave and microstructural features… read more here.
Keywords: shock; pore collapse; collapse; shock strength ... See more keywords
Continuum and molecular dynamics simulations of pore collapse in shocked β-tetramethylene tetranitramine (β-HMX) single crystals
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Applied Physics"
DOI: 10.1063/5.0025050
Abstract: The collapse of pores plays an essential role in the shock initiation of high energy (HE) materials. When these materials are subjected to shock loading, energy is localized in hot-spots due to various mechanisms, including… read more here.
Keywords: tetramethylene tetranitramine; pore collapse; temperature; collapse ... See more keywords
Molecular dynamics-guided material model for the simulation of shock-induced pore collapse in β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (β-HMX)
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DOI: 10.1063/5.0056560
Abstract: Material models for single-crystal β-HMX are systematically examined in the context of continuum pore-collapse simulations. Continuum predictions using five different isotropic material models are compared head-to-head with molecular dynamics (MD) predictions for a 50 nm cylindrical… read more here.
Keywords: hmx; pore collapse; molecular dynamics; model ... See more keywords
Theoretical study of the critical dynamic behaviors for pore collapse in explosive
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DOI: 10.1088/1361-651x/abfd1c
Abstract: The shock loading process of porous explosive is simulated by molecular dynamics for different pore diameters and piston velocities. We find that the defect evolution consists of three steps: pore collapse, stress relaxation and hot… read more here.
Keywords: dynamic behaviors; rebounding wave; process; pore collapse ... See more keywords
Preventing Mesh Pore Collapse by Designing Mesh Pores With Auxetic Geometries: A Comprehensive Evaluation Via Computational Modeling.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of biomechanical engineering"
DOI: 10.1115/1.4039058
Abstract: Pelvic organ prolapse (POP) meshes are exposed to predominately tensile loading conditions in vivo that can lead to pore collapse by 70-90%, decreasing overall porosity and providing a plausible mechanism for the contraction/shrinkage of mesh… read more here.
Keywords: pore expansion; pore collapse; pore; auxetic geometries ... See more keywords