Techwebinar: introduction to SPH and CEL (meshless approaches)

Abaqus is supplied with meshless approaches, the Coupled Eulerian-Lagrangian (CEL) and Smoothed Particle Hydrodynamics (SPH) methods.
During this online techwebinar, intended for 4RealSim software customers, the meshless approaches are introduced, their benefits are discussed and demonstrated.

Coupled Eulerian-Lagrangian (CEL)

In a traditional Lagrangian analysis nodes are fixed within the material, and elements deform as the material deforms. Lagrangian elements are always 100% full of a single material, so the material boundary coincides with an element boundary.
By contrast, in an Eulerian analysis nodes are fixed in space, and material flows through elements that do not deform. Eulerian elements may not always be 100% full of material—many may be partially or completely void.
Eulerian 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. This powerful, easy-to-use feature of Abaqus/Explicit general contact enables fully coupled multi-physics simulation such as fluid-structure interaction.

Smoothed Particle Hydrodynamics (SPH)

Smoothed particle hydrodynamics (SPH) is a numerical method that is part of the larger family of meshless (or mesh-free) methods. For these methods nodes and elements are not defined as you would normally define in a finite element analysis; instead, only a collection of points are necessary to represent a given body. In smoothed particle hydrodynamics these nodes are commonly referred to as particles or pseudo-particles.

CEL and SPH applications

Liquid sloshing, gas flow, and penetration problems (like bird impact) can all be handled effectively using Eulerian analysis. Eulerian-Lagrangian contact allows the Eulerian materials to be combined with traditional nonlinear Lagrangian analyses.
Smoothed particle hydrodynamic analyses are effective for applications involving extreme deformation. Fluid sloshing, wave engineering, ballistics, spraying (as in paint spraying), gas flow, and obliteration and fragmentation followed by secondary impacts are a few examples.

There are many applications for which both the coupled Eulerian-Lagrangian and the smoothed particle hydrodynamic methods can be used.

Who should attend this event?

4RealSim Abaqus customers

Type of event

Technical online webinar