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Elements: An Engineering Simulation Blog

Serving the engineering simulation community and ANSYS and Rocky DEM users by sharing news, workshops, seminars, training, webinars, tips & tricks, and more.
Dec
03

For Some High-Deformation Models, You Just Gotta Remesh

NLAD meshWith the combination of increased CPU speed and advances in simulation algorithms, nonlinear analyses have become more mainstream and are now reliably and more quickly solved. One example of the advancement of algorithms is the mesh Nonlinear Adaptivity (NLAD) capabilities in ANSYS® Mechanical™ Workbench™ and MAPDL (Classic ANSYS).

Nonlinear adaptivity refers to the capability of the FEA solution process to adapt to changing conditions during a nonlinear analysis. The solution process uses a feedback mechanism to discretely or continuously adjust some internal parameters automatically so that an accurate and convergent solution is obtained.

Adaptive meshing is an example of an adaptive process. For instance, in highly nonlinear problems, excessive calculated deformation can cause analyses to fail due to poorly shaped elements. In these cases, a remesh in the middle of the nonlinear solve can return the mesh back to well-shaped elements and allow the solve to continue. In many cases, this is the only way to get a high deformation solve to converge properly.

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Sep
06

Modeling Bolted Connections

Modeling Bolted ConnectionsMany methods are available to model bolts. What are the best ways ANSYS simulation software can help engineers with bolt simulation, and how might an engineer approach bolt projects?

In this recorded webinar, Tyler Coffey, SimuTech FEA Consulting Engineer, shares his expertise using ANSYS Workbench™ in models that…
  • Use bonded contact to attach the parts (bolts not included)
  • Use beam elements to model the bolts
  • Use solid elements to model the bolts but do not model the threads
  • Include the threads in modeling
Click to watch the recorded webinar, and download the presentation slides and models.
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Aug
30

FEA Best Practices Video Series

New to FEA or simulation tools in general? Our training videos can help.

This eight-video course is geared toward engineers and engineering managers. While the course includes information on ANSYS FEA, this series is also a good primer for understanding FEA as an important tool for accurate design, whichever commercial code you’re using (ABAQUS, NASTRAN).

We’ll discuss element theory, element types, preprocessing, solution, and postprocessing, and much more. Watch the introductory video (see below) at no charge for more details on what’s covered.

All of the videos in this course may be viewed in SimuTrain, our subscription-based portal. SimuTrain provides 24/7 access to lots of ANSYS-related training materials like this FEA series, plus more “best practice” videos, our popular Quick Start videos, and much more.

Interested? Request a free trial or contact your local SimuTech office.

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