Constructive solid geometry and simple tetrahedral meshing in gmsh

Ғылым және технология

In this tutorial I teach some basics about how to use the geometric modeling options available in gmsh to generate a basic volume geometry which is then meshed into tetrahedrons.
www.joseabell.com

Пікірлер: 9

  • @JoseAbell
    @JoseAbell2 жыл бұрын

    Sorry for the bad audio. I need to get a decent mic.

  • @abolfazlnajafi
    @abolfazlnajafi2 жыл бұрын

    Thank you so much, can't wait to see the next video. ☺ Please also make a tutorial for post-processing the whole OpenSees model (tcl interpreter) in ParaView. I have some trouble to set a PVD recorder in tcl scripting.

  • @JoseAbell

    @JoseAbell

    2 жыл бұрын

    Hi! I'm sorry I didn't get around to doing this. Ended up doing an in-class tutorial for the FEM class. I will at some point create a tutorial for gmsh and opensees interfacing and post processing back in gmsh directly. PVD is nice, depending on what elements you're using.

  • @abolfazlnajafi

    @abolfazlnajafi

    2 жыл бұрын

    @@JoseAbell Hi, Thank you so much. I would appreciate your future tutorial about gmsh. I prefer to use an open source pre-processor like gmsh rather than using some commercial ones like GiD, etc. for my large SSI models.

  • @lyxxxiao4291
    @lyxxxiao4291 Жыл бұрын

    Thank you for your video. Could you please explain how can we mesh a cube with different element size in different regions using octree?

  • @JoseAbell

    @JoseAbell

    Жыл бұрын

    Hi. As far as I know it is not possible to generate octree meshes in gmsh. Regular brick elements its easy. You can probably start with a coarse gmsh brick mesh, and then do the octree "by hand" in python.

  • @zaidal-qadhi826
    @zaidal-qadhi8262 жыл бұрын

    Thank you for the video. How can I trim cylinder by a surface in gmsh?

  • @JoseAbell

    @JoseAbell

    2 жыл бұрын

    This is more of a gmsh question, but you can use boolean operators to achieve a trim. Think of using an intersection or difference operator with a volume that has your desired plane as one of its faces. You can do first the difference operator but not erasing the original geometry and tool. Then you apply the intesection operator on the original geometry and this time you DO erase the original geometry and tool.

  • @zaidal-qadhi826

    @zaidal-qadhi826

    2 жыл бұрын

    @@JoseAbell Thank you for your reply. I already figured that out using boolean operation, namely cut boolean operation.

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