ALE3D: An Arbitrary Lagrangian-Eulerian Multi-Physics Code

Noble, C R; Anderson, Andrew T.; Barton, Nathan R.; Bramwell, Jamie A.; Capps, Arlie G.; Chang, Michael; Chou, Jin J.; Dawson, David M.; Diana, Emily R.; Dunn, Timothy A.; Faux, Douglas R.; Fisher, Aaron; Greene, Patrick T.; Heinz, Ines; Kanarska, Y.; Khairallah, Saad A.; Liu, Benjamin T.; Margraf, Jon D.; Nichols, Albert L.; Nourgaliev, Robert; Puso, Michael A.; Reus, James F.; Robinson, Peter; Shestakov, A.; Solberg, Jerome; Taller, Daniel; Tsuji, Paul H.; White, Christopher A.; White, Jeremy

doi:10.2172/1361589

Cited by 74 publications

(23 citation statements)

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“…Thus, we investigated how these results relate to the observed differences in acute neurobehavioural responses to impact injury and blast exposure by using dynamic computational simulations of our two experimental mouse models. We used the Arbitrary-Lagrangian-Eulerian hydrostructural finite element code ALE3D ( Noble et al , 2017 ) developed at the Lawrence Livermore National Laboratory to simulate the experimental impact instrument described above and blast tube used here and in previous studies ( Goldstein et al , 2012 ; Kondo et al , 2015 ). We simplified the computational analysis by assuming a spherical mouse head consisting of a 0.2 mm thick skull, 0.2 mm subdural layer (with CSF), and a 10 mm diameter brain ( Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Computational simulations were conducted using ALE3D ( Noble et al , 2017 ) in explicit dynamics mode with the solid regions held Lagrangian and the gas regions allowed to advect and relax to prevent mesh entanglement. All elements for the impact simulations were 3D linear reduced integration elements, whereas the blast simulations used 2D axisymmetric reduced integration elements.…”

Section: Methodsmentioning

confidence: 99%

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Concussion, microvascular injury, and early tauopathy in young athletes after impact head injury and an impact concussion mouse model

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Fisher

Minaeva

et al. 2018

Brain

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Concussion, microvascular injury, and early tauopathy in young athletes after impact head injury and an impact concussion mouse model

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Fisher

Minaeva

et al. 2018

Brain

326

308

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“…We perform pore collapse simulations using the multi-physics arbitrary Lagrangian Eulerian finite element hydrocode, ALE3D [24]. Figure 2 depicts the general setup for the 2D plane strain simulations.…”

Section: Code and Setupmentioning

confidence: 99%

Modeling The Effects of Shock Pressure and Pore Morphology on Hot Spot Mechanisms in HMX

Springer

Bastea

Nichols

et al. 2018

Propellants Explo Pyrotec

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We investigate the effects of shock pressure and pore morphology on the formation and growth of hot spots in HMX (octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine). Both non‐reactive and reactive ALE3D simulations are used in these studies. Our non‐reactive simulations show a viscous‐dominated pore collapse mode at lower shock pressures (2–10 GPa) with shear band formation and a hydrodynamic‐dominated mode at higher shock pressures (20‐40 GPa) due to bulk melting. When normalized by bulk shock heating, viscous‐dominated pore collapse modes are more efficient at generating hot spots. Pore morphology influences the post‐collapse temperature distributions and reaction rate for a fixed pore area and shock pressure. We find that multiple surface pores at the binder‐grain interface tend to react the fastest. Due to their upstream location in the HMX grain, the surface pores collapse sooner than interior pores; thus, the extent of reaction will generally favor these morphologies because they have more time to grow. In general, multiple smaller hot spots tend to react faster than a single larger hot spot because they accelerate one another's burning. The rank order of morphology effects, however, is not the same for non‐reactive and reactive simulations. For example, while multiple surface pores produce the highest reaction rates they do not produce the highest (non‐reactive) hot spot temperatures. Our numerical studies provide insights on hot spot mechanisms in lieu of direct measurements and can be used to develop advanced shock initiation models.

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“…Complementary finite element simulations were performed in ALE3D, an arbitrary Lagrangian Eulerian finite element code developed at Lawrence Livermore National Laboratory. 45 The simulations were performed on a 4 Â 8 Â 12 polymer octet lattice with a relative density of 10%, see Fig. 1.…”

Section: Simulationsmentioning

confidence: 99%

“…The shorter time step in the prior simulations is a direct consequence of the higher sound speed in the Al-6061 effectively controlling the time step. The simulations are run using a mixed element advection scheme 45 as opposed to explicitly modeling contact. Material interfaces are inferred.…”

Section: Simulationsmentioning

confidence: 99%

In situ dynamic compression wave behavior in additively manufactured lattice materials

et al. 2018

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ALE3D: An Arbitrary Lagrangian-Eulerian Multi-Physics Code

Cited by 74 publications

References 0 publications

Concussion, microvascular injury, and early tauopathy in young athletes after impact head injury and an impact concussion mouse model

Concussion, microvascular injury, and early tauopathy in young athletes after impact head injury and an impact concussion mouse model

Modeling The Effects of Shock Pressure and Pore Morphology on Hot Spot Mechanisms in HMX

In situ dynamic compression wave behavior in additively manufactured lattice materials

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