Coupled Eulerian-Lagrangian Methods for Earth Penetrating Weapon Applications

Brown, Kevin H.; Burns, Shawn P.; Christon, Mark A.

doi:10.2172/808588

Cited by 18 publications

(16 citation statements)

References 13 publications

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“…The boundary of the Lagrangian domain is taken to represent the interface between the different domains [24]. Different CEL algorithms may be characterized by the details of how this interface condition is treated [25]. The general contact algorithm programmed in Abaqus/Explicit is adopted for the interface behaviour [26].…”

Section: Coupled Eulerian-lagrangian Formulation (Cel)mentioning

confidence: 99%

On the Selection of Johnson-cook Constitutive Model Parameters for Ti-6Al-4V Using Three Types of Numerical Models of Orthogonal Cutting

2015

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Johnson-Cook constitutive model is still the most used model in metal cutting simulation, although several drawbacks reported in the literature. A high number of Johnson-Cook model parameters can be found in the literature for the same work material. One question that may arise is "What is the most suitable set of Johnson-Cook model parameters for a given material?". The present paper puts in evidence some issues related with the selection of these parameters from the literature. In this contribution, two sets of Johnson-Cook model parameters for Ti-6A-4V are evaluated, using three types of metal cutting models. These models are based on three different formulations: Lagrangian, Arbitrary Eulerian-Lagrangian (ALE) and Couple Lagrangian-Eulerian (CEL). This evaluation is based on the comparison between measured and predicted chip geometry, chip compression ratio, forces, plastic deformation and temperature distributions.

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Section: Coupled Eulerian-lagrangian Formulation (Cel)mentioning

confidence: 99%

On the Selection of Johnson-cook Constitutive Model Parameters for Ti-6Al-4V Using Three Types of Numerical Models of Orthogonal Cutting

2015

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“…0). Brown et al (2002) present different contact algorithms that have been proposed to model the interaction between the Eulerian and the Lagrangian materials. Guilkey et al (2003) and Harman et al (2003) used CEL for large-deformation fluidstructure interaction problems.…”

Section: Drawbacksmentioning

confidence: 99%

Trends in large-deformation analysis of landslide mass movements with particular emphasis on the material point method

et al. 2016

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Traditional geotechnical analyses for landslides involve failure prediction (i.e. onset of failure) and the design of structures that can safely withstand the applied loads. The analyses provide limited information on the post-failure behaviour. Modern numerical methods are able to simulate large mass movements and there is an opportunity to utilise such methods to evaluate the risks of catastrophic damage if a landslide occurs. In this paper, various large-deformation analysis methods are introduced and their applicability for solving landslide problems is discussed. Since catastrophic landslides often involve seepage forces, consideration of the coupled behaviour of soil and pore fluid is essential. Two approaches to model soil–pore fluid coupling in large-deformation analysis using the material point method (MPM) are introduced. An example simulation is presented for each approach; one on a model levee failure and the other on a natural cut slope failure (the Selborne experiment conducted by Cooper and co-workers in 1998). In the levee failure case, MPM simulation was able to capture a complex failure mechanism including the development of successive shear bands. The simulation was also able to predict excess pore pressure generation during the failure propagation and the subsequent consolidation stage. The simulations demonstrated the importance of the dilation characteristics of soil as well as changes in geometry for the post-failure behaviour. In the Selborne case, MPM was able to simulate the progressive failure of brittle, overconsolidated clay. The evolution of shear stresses along the failure surface was also captured by the MPM. The changes in the pore pressure and the actual shape of the failure surface were simulated by the MPM. The importance of accurately modelling the shear band within the MPM framework is highlighted.Peer ReviewedPostprint (published version

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“…Eulerian material can interact with Lagrangian elements through EulerianLagrangian contact; simulations that include this type of contact are often referred to as coupled Eulerian-Lagrangian (CEL) analyzes. This powerful, easy-to-use feature of Abaqus/Explicit general contact enables fully coupled multiphysics simulation such as fluid-structure interaction [17][18]. To validate calculation model, the interaction between a bubble and a free surface, the comparison is to be made between numerical results and the experimental results obtained by Klaseboer et al (2005) [1].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Dynamic Response of Air Cushion Vehicle s Skirt under High Pressure Bubble Impact

Hsu¹,

Liang²,

Nguyen³

et al. 2017

Seventh International Conference on Advances in Civil and Structural Engineering - CSE 2017

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Coupled Eulerian-Lagrangian Methods for Earth Penetrating Weapon Applications

Cited by 18 publications

References 13 publications

On the Selection of Johnson-cook Constitutive Model Parameters for Ti-6Al-4V Using Three Types of Numerical Models of Orthogonal Cutting

On the Selection of Johnson-cook Constitutive Model Parameters for Ti-6Al-4V Using Three Types of Numerical Models of Orthogonal Cutting

Trends in large-deformation analysis of landslide mass movements with particular emphasis on the material point method

Dynamic Response of Air Cushion Vehicle s Skirt under High Pressure Bubble Impact

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