Mesh of a crack area in Hypermesh

JELO
JELO Altair Community Member
edited July 2022 in Community Q&A

I am learning Hypermesh right now. I have got a project, in which I need to import a CAD model in Hypermesh to mesh the component with FEM. In this component I have got a crack area. If I try to mesh this area with a 2D-Mesh and I import it in Abaqus it doesn't work. Which section do I have to select for the crack area so that I can import the model in Abaqus?

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Answers

  • Nagahashi Kouta
    Nagahashi Kouta Altair Community Member
    edited July 2022

    Hi, Justus Losse

    I would like to help you but I'm not clear what do mean by "If I try to mesh this area with a 2D-Mesh and I import it in Abaqus it doesn't work".

    Could you please provide more information.It will be much better if there is a screenshot.

  • JELO
    JELO Altair Community Member
    edited July 2022

    Hi Nagahashi,

    thank you for the answer! I will try to explain it better. In the model I meshed the crack area with a 2D Automesh (R-Trias).image Somebody told me that I had to make a section and material for the whole component that I can import it in Abaqus. That is why I made a Shellsection for the Crack and for the whole component too.image Now I used the export SolverDeck function to import the model in Abaqus.image When I import it in Abaqus I can't even see the geometry and I don't know why.

    image

    When I delete the 2D Mesh on the crack area and than I import it in Abaqus again it works and I can see everything. But I need the 2D Mesh. Hope you can understand the problem and thanks in advance.

  • Nagahashi Kouta
    Nagahashi Kouta Altair Community Member
    edited July 2022
    JELO said:

    Hi Nagahashi,

    thank you for the answer! I will try to explain it better. In the model I meshed the crack area with a 2D Automesh (R-Trias).image Somebody told me that I had to make a section and material for the whole component that I can import it in Abaqus. That is why I made a Shellsection for the Crack and for the whole component too.image Now I used the export SolverDeck function to import the model in Abaqus.image When I import it in Abaqus I can't even see the geometry and I don't know why.

    image

    When I delete the 2D Mesh on the crack area and than I import it in Abaqus again it works and I can see everything. But I need the 2D Mesh. Hope you can understand the problem and thanks in advance.

    Hi,Justus Losse

    Sorry, I didn't find the exact reason. Please check the component name or check the message area when importing the InP file.

    It would be better if you could provide model files.

  • JELO
    JELO Altair Community Member
    edited July 2022

    Hello Nagahashi,

    thanks again for the help. Here I have got the Hypermesh Model and the Input File which I would like to import in Abaqus: 

  • JELO
    JELO Altair Community Member
    edited July 2022

    Unfortunatelly the Input file is too big to add it here. It would be great if you could export the solver deck 

  • Satish Kotagi
    Satish Kotagi New Altair Community Member
    edited July 2022

    Hello,

    You can delete the sets you have created in hypermesh model. Export the input file. You can import it in Abaqus CAE. It worked for me. I wanted to share the .inp file but like you said the file in too big to add.

     

  • Nagahashi Kouta
    Nagahashi Kouta Altair Community Member
    edited July 2022

    Hi, Justus Losse

    Sorry again.I use hm2017.1 and abaqus6.14.4 for some reason.It will take me some time to install hm2021,therefore I'll look into the problem tomorrow, please understand.

  • JELO
    JELO Altair Community Member
    edited July 2022
    Hello Nagahashi, of course I understand. Trank you very much for the effort!
  • Nagahashi Kouta
    Nagahashi Kouta Altair Community Member
    edited July 2022

    Hi, Justus Losse

    I've found the problem.

    image

    The part name or set name in abaqus cannot start with a number.

    image

    Please rename the components according to the rules in the first picture.

     

  • JELO
    JELO Altair Community Member
    edited July 2022
    Hi Nagahashi, thank you very much again! I don‘t know why but I didn‘t get this warning. It took up a lot of my time. Now my simulation works! :) I wish you a nice sunday!
  • JELO
    JELO Altair Community Member
    edited July 2022

    Hello, I have got an other question regarding to this model. I changed the mesh a little bit and included some partitions in the model. Now I wanted to define load and boundary conditions. I found the button analysis -> pressures and there I could define a pressure on a face of my model. The problem is that I could not change the direction of the power arrow. Do you know how to change the direction? And how can I include boundary conditions? Is it at the button collectors -> create -> load collector -> boundary?

    image

    Thanks forward and greetings.

    Justus 

     

  • Nagahashi Kouta
    Nagahashi Kouta Altair Community Member
    edited July 2022

    Hi, Justus Losse

    For the solid element, the pressure can only act on the surface of the solid element and point to the interior of the solid element. If you want to change the direction of load , please try using analysis - > forces.


    In addition, if you use ABAQUS as the solver template, I suggest you use tools - > load step Broswer, which is more powerful and convenient.

     

    image

     

    Have a good day.

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