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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 

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Found 404 results

  1. Hello everyone I have a quite complexe geometry to mesh. For this I have applied 'Check Elements Quality Index', where it shows the quality of the elements. Now I would like to know, if there is a possibility to cut the model, to be able to see the inner contours and how the elements looks there. Then I could have a better overview of the situation and know what to change for the mesh. I thank you in advance for your help!
  2. Hello, Is it possible to export Mesh and geometry created in HM to ansys APDL (In .cdb format) Thanks and regards, Bharat
  3. Zero Length CBUSH visualization

    Hello , Are there any options in HM to visualize zero length CBUSH elements . Thanks Girish
  4. Hi all, I am getting segmentation error....when try to run same scripts second time on same model...and then hypermesh get crashed.... Please share solution if any one know about it. Thanks & Regards, PD
  5. Intersections

    My assembly has a lot many elemental intersections. Is there any simpler way to eliminate it? If so, please suggest
  6. Hi All, I have a cylindrical model in which there are nodes present at the center of each axial location. Is there a way to filter center nodes from whole set of nodes available in the model? Imagine, I have no inputs or reference to find the center node available in the hm session? When my tool is opened, I wanted to collect all the center nodes available in the model. Please suggest me a way to achieve this... Regards Gopal
  7. Hello I would like to know if there is a possibilty in Hypermesh to convert a surface model to a volume model? Thank you in advance for your help!
  8. Hi all, I have a node , say 659801 and I have coordinates as (138, 150 ,0) and coordinate system id =345 Now, I want the above coordinates with respect to some other coordinate system say, 400. I am not able to locate HM-APIs which does this transformation? Please suggest me a way or API to do this transformation of coordinates.. Regards Gopal
  9. First of all, sorry if I added this question not according to the official Terms of use. It´s my first question... The problem itself is quite easy to solve i quess. I want to create a 2D mesh that is more coarse in one direction than in the other. In my case I want to have only 3 sections in the y-direction and very fine sections in x-direction. I created the geometry by first connecting 2 nodes with a linear line. Then I created a Surface by dragging along a vector. The mesh was then created by AutoMesh. Thanks in adcvance! Cheers
  10. Full component symmetry

    Hi all, I´m trying to define symmetry on both bcs and mesh to reduce computational costs in future simulations and the question is if there isn´t semiautomatic options to do that. Model is very simple, is a shell with a force (inside boundaries) and one side all constrained. To validate i have the complete model but i don´t know how to define boundary nodes to simulate that. I had readed many post about that but is not clear if this capabilities (both constraints and forces) be able to define together. Thanks in advance Simv1.hm
  11. Hello Everyone, I have a complete model in Hypermesh: components, mesh, materials, properties, .... I would like to export that model from Hypermesh to Ansys Workbench, so that someone who does not work with Hypermesh can use Workbench. Firstly, I followed the tutorial HM-4410 from Hypermesh Help (https://altairhyperworks.com/hwhelp/Altair/hw13.0/help/hm/introduction_to_ansys_model_setup_-_hm-4410.htm?toc=0&printWindow). Then, I added sensors for different types of elements and I export a .cdb file; as you can read in the tutorial. Later, I imported the flie .cdb to Ansys Workbench following a You Tube video (How to import Meshed file from hypermesh to ansys). However, when I open the Model clicking twice on the tap Finite Element Modeler, Ansys can't show all type of elements specifically elements 1D (mass, rod, beam, rigids, etc). In my case, the model has rigid, spring, shell, rod and beam elements; so I am reading in several tutorials and forums that rigid elements don't need a sensor but Ansys can't read them. My question is: what do I have to do to get an identical model in hypermesh and ansys? The pictures below show a simple model with that problem. In the first one you can see the hypermesh model with 1580 nodes and 1498 elements (shell, rigid, mass), and the other two pictures depict the ansys model (Finite element model). Ansys model has 1580 nodes and 1495 elements, so the three rigids elements (CERIG) haven not been read. Thank you for your time.
  12. Hi all, I have 2 mesh components..yellow and green considering yellow comp size...giving some tolerance of at least 2 elements size of green one...want to delete some portion from green as shown... then create mesh between these two comp...shape can be tri or quad or mixed. This is shell mesh... element size of both are different... no surface available for this 2 I want to automate these things... 1 . Delete some portion from green...considering size of yellow 2. Create mesh between yellow and green keeping connectivity in mind.. please help me out... if any one have any idea... Thanks & Regards, PD
  13. Hey, Can someone suggest me the best meshing technique and method to analyse the rollcage. Is 2d mesh enough or 3d mesh required for accurate results?
  14. Hi, im looking to import a NASTRAN mesh into ANSYS. This can be done directly in workbench, but a lot of information is lost. Specifically I would like to maintain named selections / components - so my strategy was to bring the Nastran bdf into hypermesh, create my groups there, and then export as a cdb before importing it into workbench The problem is whenever I export to cdb I only get nodes in the *.cdb, no elements. I am using Hypermesh 14.0 - anyone have a workaround for this? Thanks ! Tyler
  15. Surface normal orientation

    What is surface normal orientation and how it can be corrected?
  16. Hello everyone, I am working on an FE model containing beams that have a square (or rectangular) cross-section. As a first example, I used a beam with a square cross-section. Each side measures 20e-2m. When I export my model in LS-DYNA format, I see that a *SECTION_BEAM keyword is created. I understand well the first parameters from secid to itt, but I can't understand how the j parameter is computed. Using Hypermesh for a square cross-section with a 20e-2m side, I have J=2.25310E-4m^4. However, when I try to find this value again using formulas from the wikipedia page (https://en.wikipedia.org/wiki/Torsion_constant), I can't find the exact same value. Depending on the used formula, I either find J = 2.25000E-4 m^4, J = 2.25600E-4 m^4 or J = 2.25333E-4 m^4. These values are close (especially the last one), but still they're not equal to the one given by Hypermesh. Right now, it might not be seen as a problem, but what if the values become too different if I use other cross-section values? That's why I need to understand what Hypermesh does. I have searched the Hypermesh documentation but I didn't find any information about how this value is computed. And I need it to understand this because I want to run comparisons between commercial solvers and personal codes. Does anyone have a hint about how to find this value? Thank you in advance, Corentin.
  17. Is there a method in Hypermesh, so that tcl scripts can interface with a database (mysql)? Many thanks in advance,
  18. How to apply displacement as load in linear static analysis in Optistruct? and apply the same in local co-ordinate system? Rgds, Arul
  19. Hello, I would like to have a slight different display of surface set, as you can see this elements set is quite huge and solid (grey) almost as element . I remember from previous versions (or different configuration of display), i could visualize only small and thin triangles indicating that the element was apart from a set. I let you imagine how heavy the screen display can be with assembly and/or multitude of sets. Not sure that this could be depending of the set definition itself, imported from the deck. It is located as group display under the Entity State item but not in the model item. Thank you
  20. CFD Meshing in Hypermesh

    Can we do CFD meshing in Hypermesh?
  21. link hypermesh to nastran

    Recently im working on an assignment. I have exported solver deck from hypermesh and run it in NASTRAN but the NASTRAN is not creating punch file(.pch).Can anybody help me with this issue. It is creating all other files e.g .f06, .f04,.dball,etc. Can i use these files to do post-processing in hypermesh or PATRAN?
  22. Hi, everyone Thanks for reading this topic. When I submitted a job, I got the error information: *** Error 20222 (STR +222) in solid element connectivity, element 103338 the first 4 nodes must be unique. Then I find this element 103338 and check element, there is no problem with its connectivity and duplicates (see the bellowing picture). It is very confusing. If I delete this element and translate + duplicate an adjacent one and then equivalence nodes, the error will still exist, but in another different element. I don't how many elements has this problem. I also tried renumber all, but it is still useless. I really want to have your suggestions if you are familiar with it. Thanks a lot.
  23. Self-interaction boundaries

    Hi, I am trying to convert a stl file to 3D mesh using Hypermesh while I get this error; Possible boundary self-interaction found. I have tried to fix it by finding penetration and intersections (just using automatic fix). But, I still getting this error. I appreciate if anyone can help me.
  24. Bounds Question

    Hi All, Am trying to understand hyperstudy using Shapes and I have encountered a bit of a headscratcher. My plate has a hole with a radius of 50mm and I want to examine the effects of changing that radius. When I apply a shape to it and get to hyperstudy it asks me for an upper and lower bound (default -1 and 1) and an initial of 0. My question is, what exactly do these numbers relate to? When I run it creates a hole 37.5mm and 62.5mm radius respectively, but how does that relate to lower and upper bounds of -1 and 1? OKay it has consistently created a difference of 12.5mm but how did it calculate this? Many thanks in advance. Is there any way I could have just said initial = 50mm, lower = 45mm and upper = 55mm? Regards Andy
  25. Cross section

    Hello I have made a lattice optimization. Now I would like to make some cross section through the model. How can it be done? I thank you in advance for your help!