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Found 90 results

  1. Hello everyone, I have a small doubt regarding the mesh size of the FEM solver when the material inside a 3D body (for RCS consideration) is characterized with some finite conductivity. I can see the standard mesh default for FEM is around `\lambda/10` but with a conductivity of 10 inside a material (`\epislon_r = 1`), the mesh size for standard meshing is around `\lambda/145`. Does it change when the skin depth changes? I have attached my cfx here. Cyliner_FEM_V2.cfx
  2. Good afternoon, I'm trying to mesh a housing and I wanna model parts of it with SHELLS and others with SOLIDS. How do I connect both? Thanks!
  3. Hello community, We are trying to do topology optimization of this solid body but after running for 20% or so it gives us this error. Any help will be much appreciated. Thanks.
  4. Hi, I've prepared the criteria file for performing batch mesh operation. I've made some continous improvements and feature capture and Quality were improved. But I can't improve the flow. There are many opposite trias in the mesh (As shown in the attached picture). Even I've enabled Aggresive Tria Reduction. It doesn't give me the flow I'm looking for. I'm sharing the .param file for your reference. Kindly check and let me know if there are any improvements need to be done. Thanks and Regards Jegan.Test_10mm.param
  5. When I run my model with the default solver (I guess it is MOM), I get an error which says "ERROR 33238: Not enough memory available on the hard disk for an out-of-core file" though I already have 8 GB of RAM and more than 200 GB of free HDD space. However, when I switch to FDTD solver, it doesn't show up the error, but it takes a really really long time. I have attached the model to this post. Please help me what to do with this error as I haven't found any good solutions yet. 08262019_Feko_two_blades.fek
  6. I have been trying to repair a STL file so that I can run it on my CADFEKO. However, after repairing it on FreeCAD, it still shows an error and that is --- "The triangle number 1 has neither an edge nor a connection point". As I am new to this tool, I have no idea how to fix it. Please help. fsr1FC8E1B030gr (Meshed).stl
  7. Dear All, Can anyone help me in developing the scripts for Hex meshing. Thanks in advance. Regards, Mahesh Peram
  8. Hi! I'm trying to mesh a solid with TetraMesh and it states the following error: "2 edges failed nodal setup. Meshing failed". But I can't see anything wrong or red colored or anything that tells me where the mistake is. Even with visualisation options. The solid is created properly with bounding surfaces so I guess there are not free edges. Could you help me?
  9. Hi,I am trying to simulate a bird impact on a plate with RADIOSS. So I am creating my model on hypermesh now, i chose to consider the bird as a fluid with a density of 438 kg/m3. I would like to work with SI units and the dimensions of the bird are : 0.1325m long cylinder with two hemisphere ends having a radius of 0.075m. I am now trying to mesh this geometry with the SPH module in hypermesh. So i entered a pitch of 1e-3m and a density of 438kg/m3 as i said before. But when i create the mesh, nothing happen and i only get this message "0 mass elements created". I attached my file with the topic. I don't know what could be my error, more of that I tried to do it using mm instead of m and it worked... But I really want to use SI units. Thank you in advance for your help, Gaspard. BirdStrikeSI.hm
  10. ICAST Version 2019.2 For the attached Aluminum casting file: Mesh=5mm Temp=765C Fill-time 14sec Material AL A356 1.When making the Mold 6-8 mm below top (as in reality), mesh fails. 2. When checking for Niyama (0.3) the all partis colored. Is it going to be bad part? Please advise 9643-1101-10CDt-PART_1.icast
  11. Is it possible to do a 2D simulation of an aerofolio with Acusolver?
  12. Hello. I've been struggling with the simulation of a sensor consisting of a coil with a ferromagnetic core and a magnet. The main output to analyse is the voltage induced on the coil by a rotating target. I'm modeling the coil as stranded-coil conductor coupled with a series resistor (see attached circuit.png). When measuring the voltage across the coil, I'm looking at very high fluctuations in voltage (see attached results.png), if I take the derivative of the flux (flux.png) through the coil, the behavior is minimized a bit, but still present. Any ideas to improve this high variation? Thanks.
  13. Hello, I have a 2D surface meshed using tria-shell elements (Img 1) which I would like to use as a reference and mesh it onto the solid object (Img 2). Presently I need to define equivalence between both components which results in element distortion due mis-matched element's position and size. How can I use the shell elements of the surface component to "project/map" 3D elements in to the solid component? The solid component was created using the base surface and 3 addition surfaces as bounding surface. Regards
  14. Hello riecently I start to work in your programm HyperMesh, I enjoy it very mush, so many posobilities! "Ngn vet inte vad han skall fästa blicken på", as we say. And becouse I am in the 3d printing theme. (Frankly, for me it is almost art! ) I really want to use your program for meshing some breathtaking geometries for my customers. They need some speciefic requirements in the main strength characteristics. Ussually I used Abaqus for this properties but for complex geometry it could be sometimes very tricky and I was recomended to use your program. Could you tell me how to mesh complex stl model in Hypermesh, please? As I uderstood, reading your forum, first of all I need to do open stl: File > Import > File type > STL; then I need to create a geometry from mesh: Geom > surfaces from FE (elems - all; feature edges; complexity 10) [sometimes Hyper writes that he failed to create some surfaces, wich is oddly]; And then I can`t create solid, Hyper writes created 0 solid elements and 0 nodes
  15. Hello, I want to make a thermal simulation of a cooling plate in hyperworks with the AcuSolve Solver. The geometry would be this: Where an aluminium cooling plate (the grey solid) is in contact with a water flow (blue volume). The problem is that I can't get a mesh with coincident nodes between both volumes, taking into acount that for the AcuSolve simulation I need two surfaces in the interface between the solid and the liquid volume. Do you have any solution for it? Thanks in advance.
  16. Hi, I have a structure made of 3d solid map hex mesh elements, ie. primitive unit cells (see primitive image attached). I have turned my hex mesh elements into bar2 elements. I would like to create a central node to the primitive unit cell and connect bar elements to this central node (see body centred cubic image). I know this will most likely be a TCL script problem but I'm not sure how the script would be written. I have successfully created the primitive unit cell and used config edit tool to create bar2 elements (CBEAM's) But I would now like to do this with elements connected to a central node. A comparison of what I'm attempting to do can be seen in this paper: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265793/pdf/materials-11-02073.pdf I look forward to hearing from the community, Kind Regards, Laurence
  17. Hi, I am new Hypermesh and Alatir. I need to create a mesh for simulation. I just started using ANSYS and Hypermesh and i cannot figure out how to create a solid from .stl file. I need to assign inlet outlet, wall and mesh the entire volume. I have to figure out but i couldn't find any sources to create a mesh from .stl file. Thank you Volkan 449099_B_fixed.stl
  18. Hi All, I have to run in batch mode a tcl file, in which a meshing process is recorded. Is there a guide or some tutorials? The tcl is perfectly working if i run it from Hypermesh, but it doesn't if I use hmbatch.exe Thanks, Enrico
  19. hello, i have a problem with meshing a solid. first i have one solid which i have extruded to have two solid linked together (the surf between the two is yelow) before launching 2D mesh my geometrie have no free edges. after 2d meshing i see that a free edge was created in the intersection of the two surfaces of the solids. i tried to use the tool equivalence but it's not working. with the free edge created i cannot proceed to do a tetra mesh. if anyone have a solution i'll be grateful and thank you for your help,
  20. I am very much new to tcl .. It would be highly appreciable if anyone can help me with the logic I have a model and it somewhat looks like the one shown in the figure. the free space shown at the centre is also not exactly as that shown in the pic. It can be of any shape. The shape of the free space can be an hole or in a zig zag manner also. My OBJECTIVE is to fill this free space with MESH. So my logic is to find the free edges and mesh the center free edge area. Can anyone please give me some clue how to proceed? Is there any similar type of tcl available in script exchange?
  21. I am very much new to tcl .. It would be highly appreciable if anyone can help me with the logic I have a model and it somewhat looks like the one shown in the figure. the free space shown at the centre is also not exactly as that shown in the pic. It can be of any shape. The shape of the free space can be an hole or in a zig zag manner also. My OBJECTIVE is to fill this free space with MESH. So my logic is to find the free edges and mesh the center free edge area. Can anyone please give me some clue how to proceed? Is there any similar type of tcl available in script exchange?
  22. The error code that I get executing "check physics" is: The lines :64 65 124 125 of the plan of periodicity have no linked discretisation. The mesh periodicity is not assured. The PERIODICITY PeriodicityNumberZaxis can not be taken into account Lines of the constraint without reference line: To obtain the same line mesh on lines, you may use a LINKED MESH_LINE I'm designing a quarter of a motor. The lines 64, 65, 124 and 125 correspond to the ones on the vertical axis. I'm using the periodicity setting to create the other quarters of the motor so that I get a full one. I've set Repetition number to 4, Offset to 0 and Odd periodicity. The mesh is automatically created with Mesh Faces. It has surface element with 98% of excelent quality and 2% of good. Checking the geometry doesn't give any errors. However I'm concerned that using cartesian and cilindrical coordinate systems on the same geometry may cause this error code. What do you think? I've tried creating a Linked Mesh Line. However It asks me to introduce a transformation that will define that Mesh Line, but I'm using a periodicity so it doesn't appear on the transformations menu. What can I do now? Thanks
  23. Why hex mesh is not solving in Optistruct? when i am trying to solve its showing some error. can you please help me with this. Awaiting Reply thank you
  24. Hello Guys, I have the following questions: - I just made a 2d Mesh and would like to export the mesh data for an external solver. This solver accepts CGNS-Mesh files. Is it possible to create a CGNS-file via Hypermesh Export? - Is it possible to create a structured 2D Mesh in HyperMesh with quads in which the quads take their orientation from geometry (e.g. lines or curves) so that the Mesh is really clean and structured? Thank you very much in advance! Regards
  25. Hello, I'm trying to mesh a simple rectangular beam (200mmx50mmx50mm) with a uniform mesh throughout as seen in the example photo. When I carry out a 5mm volume tetra mesh it generates uniform elements on the surfaces but this is not the case inside as seen in the attached photo. How can I achieve a uniform element pattern throughout as seen in the example photo? Thanks in advance, Tom
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