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Found 28 results

  1. Dear all, I have a question about stranded coil conductors using non-meshed coils. I have performed two transient simulations with non-meshed coils in 3D for a transverse flux machine. For the first simulation I entered 100 mOhm in the field "Resistance Formula" of the stranded conductor. For the second simulation I entered 5 mOhm. The geometry as well as the material parameters and number of turns were the same for both simulations. For both simulations, the non-meshed coil was part of an electric circuit. I assumed that the resistance value is calculated via FLUX using the resistance formula R=rho*l/A and that the value entered in the "Resistance Formula" field (stranded coil conductor) does not matter if the specific resistance as well as the fill factor are specified for the non-meshed coil. However, the result for the evaluated resistance is different for both simulations. Preset value of 100 mOhm --> evaluated resistance = 106 mOhm Preset value of 5 mOhm --> evaluated resistance = 11 mOhm The evaluated resistance of the non-meshed coil is the same for both simulations: 3 mOhm. Why is there a difference between the evaluated value of the non-meshed coil and of the stranded conductor? I assumed, this should be the same? Therefore, could you please tell me, how the evaluated resistance of the stranded coil conductor is determined? Is it important, to enter the "right" value in the field "resistance formula"? Thank you in advance and best regards, Mandy
  2. I have an CAD file (made in SolidWorks) that represents an rool cage used in Baja. I need to make a study about it, but I need to convert it in a 1D sketch. It's possible? How can I do this? Thank you!
  3. Dear all, Lately I am having some problems solving a problem that might seem "trivial", however I am still having problems getting some meaningful results. As seen from the files attached, the problem consists of two aluminium plates connected with a steel bolt and a bushing. There is a press fit of 0,2mm (if I remember well) between the bushing and the two plates. The upper plate has one of its sides fixed and a compressive force of 90 kN is acted on the lower plate. Although I have simulated the contact* between all components (plates, bolt, bushing) and ran a quassi static NL analysis, I keep getting extremely high stresses at the area seen on the attached picture. It is probably some mistake with the contact there but I cannot find it. Please have a look on the attached .hm file. There are no contacts defined to allow you to use your own approach to the problem. You can use any of the latest HM versions to setup the problem. Thank you in advance for your kind assistance. *: a number of approaches used: friction, no friction, slide, freeze etc. bolt_coupon.hm
  4. I have an issue on converting the 3D model to the 1D model can anyone help me? also, I'm attached an IGES file of a model Deepak_prabhu_S_-_Radio_Tower.IGS Deepak_prabhu_S_-_turn_solo.igs
  5. 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.
  6. Hello, I have a 2D file with a defined thickness of 7mm done on hyperform. After having run the calculation, I would like to view the results in 3D on hyperview but I can not find the button to do so. Can someone please tell me where to find this button? Thank you
  7. I'm planning to use PSOLID element for a 3D composite model, but I'm stuck with how to put thickness, orientation and Failure theory. Please tell me how to go about this. Thanks.
  8. Hi, I have been working in flux 2d for the past two months. I am now trying to shift to 3d models to explore acoustics and thermal aspects of the induction motor model. I'm using the induction motor overlay and mesh using the mesh domain command with some changes in the aided mesh. I have received the following error message: The PERIODICITY PeriodicityNumberZaxis can not be taken into account Faces of the constraints without reference face: 234 1686 317 502 1386 1389 2063 2014 1489 1700 1753 1854 777 1172 830 1154 1158 865 use the LINKED mesh generator I had encountered similar errors in the 2D modeling as well which used to get solved using a linked mesh line. I tried the same method using the mesh generator and linked the above faces, but it isn't working. I also tried the method of using a complete infinite box which also didn't work. On checking the mesh I received the message attached below which divided the faces into three groups. So I tried applying three different mesh generators and linked each of the three groups separately, which again resulted in the same periodicity error. Also on using the mesh generator I get the message that the faces 1382 and 1686 are linked to themselves. Also how do you set individual faces or volumes that were set as invisible back to visible? Thank you for any time and effort put into helping me out in advance.
  9. I have a model with 5 parts and it is symmetric. I partitioned as much as I can, but still, have an issue in mappable solid as the picture below (this is the simples and most complex part in the model) Any advice on partitioning? Thanks!
  10. Hi all, I was running optistruct 13.0 in order to make a correlation between a 1D and 3D model. First of all I simply created a fixed beam at one end, and the other end with a force of 1 kN. The outputs were very simple to obtain, indeed I could actually have pretty similar results in terms of stresses, displacements and constraining reactions. For the 3D the force and the constraint were applied using RBE2 elements, considering a node as independent and the ones on the cross-section of the beam as dependents, as you can see in the figures below I attached. Now the thing is, when I tried to make a correlation between a slightly different model than the one mentioned above, I couldn't obtain similar results, instead they were really different. I made a comparison between stresses, displacements and constraining reactions. The force applied was 1 kN as well, on the free end of the "T-structure". The section used for both 1D and 3D was an IPE360. For the beam of 1 m (the one where I applied the force) I used a freeze contact with the one of 2 m (fixed at both ends), in order to replicate the same condition of the 1D. The displacements were really different, almost 2 order of magnitudes of difference... the stresses obtained in the 1D was 4 times bigger than the one in the 3D and the constraining reactions (MRy) obtained didn't equal the real flexural moment generated by the force applied at the free end (it should equal 250000 N*mm as in the 1D, for a fixed-fixed condition). I attached all the comparisons and the .hm file if you wanna see the pre-process of the analysis. Could someone give me an explanation on this? Thanks in advance for any replies! model_1D.hm model_3D.hm
  11. In Fig. 1, it is a screenshot of a 3D solid that I plan to mesh, I have a very thin slice at the top (please see circled region in Fig. 2). 1. I meshed the top surface as shown in Fig. 3. 2. I plan to use solidmap to mesh the top slice first, and then mesh the rest of the 3D solid. I select all the surface elements as my source elements, I select the bottom of the top slice as my destination surface. I select one side surface as my "along geom" (as shown in Fig. 4) 3. After I click mesh, an error message shows up "Term-face-edge has a srong side-face edge idx" and several faces become white as shown in Fig. 5. Would you please tell me what is the reason for this? By the way, I first have a rectangular cross section and then I cut the four corners to make it like this. Thank you very much for your help. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5
  12. Hi All, I am selecting component using *createmarkpanel comps 1 " " ; Now i want to know selected component contains 2d 0r 3d element; Regards, PD
  13. Hi, im working on protective gear printed with carbon fiber content. In addition to impact forces, I have a size constraint on how large any opening can be. Does your product enable these kinds of parameters? Om
  14. Hello! We have the following problem by using OSSmooth for a FEA reanalysis: Our component is made up of a core (blue) and a shell (red/orange). The core has Hex 8 3D-Elements with the Card Image MAT 1 and PSolid. In order to create a shell around the core of the component, we used the tool "Find Faces". Thus we got a shell around the core with Quad 4 2D-Elements. We used the Card Image MAT8 and PShell with an offset to the outside T=2mm. Therefore there should be no intersection between the two kinds of elements (see figure 1). Both the core and the shell was defined as design space so that we optimized them both in a successful optimization. See figure 2: Holes and notches were created in the shell as well as in the core. Afterwards, we tried to import the optimized geometry with OSSmotth by using the following settings: FEA Reanalysis, iso surface, remesh, trias as mesh type and two layers attached. As a result the 3D-Elements has been updated according to the optimization result, but not the shell (see figure 3). Furthermore we got a very questionably visualization of the shell elements: At the attachment points between core and shell, the shell elements strangely stick to the outside and inside (see figure 4 and 5). Are there any mistakes in our settings or in the modelling? Thank you very much in advance for your tips and advices! Greetings Martin
  15. Hello, I am running lattice optimization on certain shapes that I would like to 3D print. I was wondering if a separate tool or software is required/can be used to make the obtained lattice structure manufacturable? What would be the method for manufacturing the varying lattice densities? Thank you, Muge Candogan
  16. Checking elements after meshing gives some percentage of element failed then how much percentage is acceptable.
  17. Hi, I meshed my model with 3D tetrahedral mesh. When I check elements, I came to know that there is an existence of Several values which can ba varied based upon our requirement. I need a Optimum value or constant or Predefined value to check 3D tetrahedral elements. Thank you in Advance
  18. I recently meshed my Solid component by using Tetramesh. When I supposed to remesh with my preferred values (Tetra angle, Quad angle or biasing), I cant find a variable meshing option. How to remesh with my preferred value? Thank you in advance.
  19. I imported a 3D solid element. When I supposed to mesh using Tetramesh, only surface mesh alone be used to mesh. I cant use Solidmesh. May i know the reason please... Thank you in advance.
  20. Dear HyperWorks Team, I have a question regarding the Fiber Optimization with Optistruct. Is it possible to not limit the optimization of Fiber Directions inside a solid to a 2D layer? More specifically I am working on a project where we put Carbon Fiber Tows into a Wooden Base Product in a completely free manner (the Carbon Fibers can be put as fully three-dimensional Spline Curves inside the Base Material). Therefor I am looking for a Tool where I can simulate both 1. the Anisotropic behaviour of the Wood, built from various layers/directions 2. Optimize the 3D-Structure of Reinforcement Tows of Carbon Fiber inside this Base Material. I am pretty confident, that 1. is possible, but I couldn't find documentation for anything like what we want to do in 2. Can you help me out with this?
  21. Hello dear forum visitors, AFDEX 3D can read AFDEX 2D results files either directly or by means of a simple connecting program, and thus 2D and 3D combined simulations can easily be carried out. Of course, the 2D results can be viewed by the 3D post-processor with more powerful graphics functions. Figure 1. shows the predictions of a five-stage precision cold forging process involving one piercing stage and a final three-dimensional stage, obtained by using the 2D and 3D combined simulation capability with minimum user intervention (i.e., with only an initial run and one connection run). Figure 1: 2D and 3D combined simulation - AFDEX It should be noted that this capability is especially efficient for fastener forming process simulation. The 2D and 3D combined simulation is strongly recommended for enhancing computational time, solution reliability, and engineering productivity when relatively few stages are three-dimensional. So it's time to use your resources smartly. Cheers from AFDEX Support team!
  22. Hello, I am trying to 3D mesh this solid part by using solid mapping. I tried "trim with surf" to make the part mappable but I don't think I can create surfaces/divisions good enough for solid mapping.I am also attaching the partially trimmed version. Which method I should follow to make the rectangular sides mappable and get rid of the red layer in the cylindrical part? Thank you in advance, Muge
  23. Submitted by pete on Mon, 05/18/2009 - 23:21 Real-time 3D animation of VRML scene with user controlled thruster on the lunar lander. Lunar Lander Game.vsm autoPilot.txt Spacecraft.WRL
  24. Hi, I used OSSmooth to Import an Isosurface into Hypermesh from a previeous optimisation. I want to export part of an assembly to stl, so I can't directly use the export from OSSmooth. When I create the faces from the "find faces" panel and try to export as stl. The resulting file is created but has 0 KB and no model inside. I don't know what I can try to resolve this issue as there is no error message. Greetings from Germany, Marius
  25. Hello Everybody, I am trying to convert a shell to a solid, using aerospace optistruct porfile. After realizing all plies the instruction says the §D Element Types have to be converted from SC8R to SC6R. The problem I have is, that, in the element panel there is no SC8R type, but in the Help Document i is stated, that the shell to solid conversion is supported by optistruct solver. Can anybody help me with this problem? Kind regards in advance Dean
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