Specifying the number of particles to be generatedīy default, one particle is generated per parent element. The technique can use any of the materials available in Abaqus/Explicit (including user materials). A special formulation is used to ensure the smoothest possible transition between the two modeling methods. Gravity loads, contact interactions, initial conditions, mass scaling, and output requests associated with the parent elements or nodes of the parent elements will be transferred appropriately to the generated particles upon conversion in an intuitive way as explained below. You then specify that these “parent” elements are to convert to internally generated SPH particles when a user-specified criterion is met. You mesh the part with C3D8R, C3D6, or C3D4 reduced-integration elements or a combination of these elements. SPH methods are well suited for large deformation. It is sometimes easier to create the mesh with Lagrangian finite elements, and Lagrangian finite elements are often more accurate for small deformations. You can define the model with Lagrangian finite elements and convert them to SPH particles either at the beginning of an analysis or after the deformation becomes significant. CEL and SPH capabilities in Abaqus/Explicit are demonstrated using industrial examples, as well as the setup of CEL to solve a benchmark UNDEX problem using Abaqus/CAE and SPH to solve a dynamic fluid flow problem on the 3DEXPERIENCE Cloud platform.You can take advantage of the intrinsic strengths of both Lagrangian finite element and SPH methods when modeling a body. CEL and SPH are well-established methodologies that have been broadly applied to problems of extreme deformation of materials in any phase (solid, liquid, or gas), including materials as they transition between phases (such as in the melting of metals.
In this presentation, we will discuss two of these capabilities that are embedded in 3DEXPERIENCE Abaqus/Explicit: Coupled Eulerian-Lagrangian (CEL) and Smooth Particle Hydrodynamics (SPH). These capabilities have been developed over many years and are fully integrated as core Abaqus functionality.
The Abaqus Unified FEA product suite has always offered significant capabilities that are used to solve multiphysics problems.
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