A “kernel function” W, which as shown in Figure 1 is a function of the distance from the material point of interest, is used to approximate and smooth the Direct delta function. SPH is a continuum modeling method (like FEM) derived in the context of interpolation theory, whereby the properties at a particle (a material point, similar to an integration point in traditional finite elements) are “smoothed” over a finite region. SPH is a versatile and powerful “mesh-free” Lagrangian computational method that was introduced in the mid-1970’s as to solve structural problems related to astrophysics and has been broadly employed in many global industries, including Defense, Marine, and Life Sciences. Herein, we will discuss the usage of one such capability to solve a simplified, yet realistic engineering problem: Smooth Particle Hydrodynamics (SPH), which is available on the 3DEXPERIENCE Platform as well as Abaqus Unified FEA. Secondly, the Structural FEA model can easily be extended to include additional physics interaction, without the need for additional tools, interfaces, or simulation methodology.ĭon’t miss the Tech Talk on August 25th.
For starters, the same model, same element library, same material data, and same load history are utilized for all the physics. The advantage of utilizing organic multiphysics capabilities, such as available in Abaqus, include the ease with which Multiphysics the Abaqus structural FEA user can solve complex problems involving multiple physics domains. Starting with Abaqus V2 (in 1979), Abaqus/Aqua simulates hydrodynamic wave loading on flexible structures for offshore pipelines. Multiphysics simulation capabilities have been in continuous development since then are fully integrated as core functionality in SIMULIA products. Multiphysics technology has been a part of the Abaqus Unified FEA product suite from the beginning.
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