This assumption produces a simple, approximate material surface that may be discontinuous between neighboring elements. The interface reconstruction algorithm approximates the material boundaries within an element as simple planar facets (the Eulerian method is implemented only for three-dimensional elements). Within each time increment, the boundaries of each Eulerian material are reconstructed using these data. Volume fraction data are computed for each Eulerian material in an element. This powerful, easy-to-use feature of Abaqus/Explicit general contact enables fully coupled multi-physics simulation such as fluid-structure interaction. If any Eulerian material moves outside the Eulerian mesh, it is lost from the simulation.Įulerian material can interact with Lagrangian elements through Eulerian-Lagrangian contact simulations that include this type of contact are often referred to as coupled Eulerian-Lagrangian (CEL) analyses.
The Eulerian mesh is typically a simple rectangular grid of elements constructed to extend well beyond the Eulerian material boundaries, giving the material space in which to move and deform. The Eulerian material boundary must, therefore, be computed during each time increment and generally does not correspond to an element boundary.
#Abaqus 6.14 cel full#
Eulerian elements may not always be 100% full of material-many may be partially or completely void. Lagrangian elements are always 100% full of a single material, so the material boundary coincides with an element boundary.īy contrast, in an Eulerian analysis nodes are fixed in space, and material flows through elements that do not deform. In a traditional Lagrangian analysis nodes are fixed within the material, and elements deform as the material deforms.