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LisaMontréal

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About LisaMontréal

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  1. Hi everyone, Could someone explain what we see on the solver view please ? Thanks a lot! Lisa.
  2. Hey, Thanks for your answers ! I cannot find "NLPARAM". Do you mean "NLPARM" ? Best regards, Lisa
  3. Hi, Could someone explain what does *** ERROR # 4965 *** Maximum number of time increment cutbacks reached,analysis aborted. mean ? What is the issue ?
  4. Hello everyone ! I am new to Altair, and I was wondering about penalty methods in Altair. I could not find information about this subject in Altair University, and no post in this forum seems to list these methods. Do penalty methods exist in Altair ? How are they called ? What are their features? Do some of them better fit strong nonlinearities ? What is the type of law that "drives" them (exponential, ...)? Thanks in advance for sharing your knowledge
  5. Hi, thanks for your answers. I finally made a first cleaning on another software, that creates a smoothed shape which can be better meshed with the Automesh 2D - QI Optimize. Then I correct the few bad elements with the Quality Index Panel.
  6. Hi everyone, I am trying to get the pressures/Von Mises Stresses on a plate on which an object lays (a sphere in this case, I have created an easier example than my real model). Here is what I have created in Hypermesh: I attached the .hm file in this post. The elements of the sphere are shell trias, those of the plate are 3D quads. As my real model is far more complicated, the best solution is to fix the upper points of my object, and make the plate moves to the object. The force on the plate represents the weight of the sphere (principle of reciprocal actions). The plate is allowed to move in the Z-direction only. The idea is that the plate will finally get in contact with the sphere. In fact, I am not interested in what happens when the contact begins, I just want the values of pressure et stresses on the plate once the contact is established and the equilibrium is reached. In brief, when I run this model with OptiStruct, the plate penetrates the sphere, and no stresses appear on the plate : I would be glad if someone could help me solve these issues of components penetrating each others, or of the "non-existing" stresses. Any help or idea would be welcome Thanks, Lisa. test5.hm
  7. Is it because the SRCHDIS must not be equal to 0 ? Can anyone explain what is SRCHDIS exactly please ?
  8. Hi, I get an error when running my model: ************************************************************************ A fatal error has been detected during input processing: *** See next message about line 32654 from file: Z:/Bureau/Lisa/4) Altair - Modèle Pied Plat/Flatfoot_model_shell_trias_automesh_QI Optimized_v7 "CONTACT 43 0.6 84 85 NORM0.0" *** ERROR # 1000 *** in the input data: Incorrect data in field # 7. ************************************************************************ Obvioulsy it affects the contact whose ID is 43. It is a contact between 3D hexa elements et 2D trias elements. Does anyone know what could be the problem on the contact ? Thanks in advance for any help or idea to solve the issue, Lisa.
  9. Hi everyone I am trying to mesh a stp file (attached). First of all, is it possible to mesh the surface with trias and then mesh the inner solid in 3D with tetra elements, or do you think the geometry does not enable this method ? Then, I have tried 2D tria mesh et 3D tetra mesh, with different size elements, but it seems that Hypermesh always gives the same meshing as in the initial stp... Finally, does anyone have an idea of how to clean up this geometry in an efficient way ?... does anyone work in the biomedical field here and has already faced the problem ? Thanks in advance for any help.. Cuneiforme_1_PP_D.stp
  10. Thanks for your suggestion, but how can I obtain a 3D mesh from a 2D mesh (made with the shrink wrap tool) ?
  11. Here are pictures of one these bones I am working on: The initial component: The same component once meshed in 2D (and cleaned up):
  12. Hi everyone, I am using the shrink wrap tool to mesh stl files representing foot bones. However when I directly use the 3D hexa mesh of this tool, the shape of the bone is not well respected. When I use the 2D mesh of the shrink wrap tool, the "envelop" of the bone is correct but I cannot find a way to 3D mesh from the 2D mesh (I don't manage to make the Solid Map effective). Could anyone help me transforming the 2D mesh into 3D mesh ? Thanks in advance !
  13. Hi everyone, I segmented MRI images to obtain the 3D geometry of a foot on Seg3D (free software, equivalent of MIMICS but far less powerful...). However I don't know how I can import this geometry on Hypermesh now... In Seg3D, I can export my geometry into files whose type can be .nrrd, .mat, .bmp, .mrc, .tiff, .dcm, .png. But it seems none of these types can be imported in Hypermesh. Has anyone faced this problem before ? Does someone have an idea to solve the problem ? Thanks in advance !
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