Hello everyone,
I'm working on a research where I need to perform the import of a "human body" to simulate a person sitting in a chair. I found some models available on the internet, however It provides templates in .obj and .stl.
Some unsuccessful attempts to import the template into Abaqus:
- Import formats (.obj .stl) into solidworks and save in .iges or .sat (Situation: A geometric error occurs in Abaqus, and makes it impossible to perform some types of Mesh)
- Look for other models (other than humanshape org), I found some already available in .iges, however I had the same problem with importing in abaqus.
The following message occurs in Abaqus when I try to mesh these imported models: "The current part contains invalid geometry and can not be meshed or assigned mesh attributes.
Does anyone have any tips or stuff that comments on how best to do this import? or at best, does anyone have a model of a sitting human body that works well in software abaqus?
Thanks in advance!
This has been discussed extensively in the past here - you need a program that can create a true solid model from the stl. There are a couple of choices depending on your budget and your system, please search old questions.
See for exmaple here
https://www.researchgate.net/post/Converting_CT_scan_images_into_volume_mesh2
Hi Pml Lemes ,
In my experience, STP (step) format works pretty good with Abaqus.
Even IGES works fine. Here's a tip : when you are importing the files into Abaqus, try to import with the option "Create individual parts" instead of "Combine" option. The combine option tries to merge the solids and sometimes ends up failing.
Another option is to use Rhino 3D. (you will find a free trial for 3 months). Import the obj/stl file that you have into Rhino, try to "clean" the stl if it has a lot of non-uniformities, and then "Export" it as step file (stp) from rhino. This usually works for me.
Hi Paritosh Hebbal ,
Your tip was very important and it worked very well, thank you!
The procedure that worked well with me was the use of Fusion 360 software (available in the student version), where I import the model (.obj or .stl), reduce the mesh and create a solid object. The software also provides the option of checking the created object, where it is possible to remove / adjust some inperfections.
Then I'll try the template in .sat and import it by following its tips. It worked well for me and is a tip for anyone who has this problem in the future!
Thank you all!
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