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Found 12 results

  1. Hi, I have done intersection check using *checkpenetration components 1 0 1 0 0 0 0 0 Please help me to get id of failed elements. I mean what is the code? I have tried below code: ::hmCollisionGui::FindTreeSelection 0 0 0 0 0 *marktousermark elements 1 But, It wont work properly. @tinh
  2. Hello Sir, I'm working on bullet penetration into steel plate. At first contact works beetwen bullet and plate, but next it doens't work so good (picture 1). Finally, contact again work (picture 2) and I don't know where is a problem. On top of that, the speed of the projectile doesn't decrease (picture 3). Contact settings: Type 7 Istf: 4 Igap: 2 Fric: 0.2 Gapmin: 0.1 Inacti: 6 I tried a lot of contact setting, among others: Type 7 Istf: 4 Igap: 2 Idel: 2 Fpenmax: 0,8 Stmin: 1000 Fric: 0,1 Gapmin: 0,04 Inacti: 6 Iform: 2 but still doesn't work. Thanks for helping me. test21.hm
  3. Raphael_Mtl

    Fixing interferences issues

    Hi all, I'm performing a dynamic simulation using RADIOSS solver. I'm creating this kind of model : I used a COMPSH material law and an SH_ORTH property in order to model an "equivalent material", with a 4 mm thickness. When I run the analysis, I've issues regarding penetrations in my model. Nevertheless, when I want to fix them using the Penetration Check tool, elems are totaly deformed. Could you please help me with this model ? Best regards, Raphael
  4. プルダウンメニューGeometry⇒Check⇒Solids⇒Interferenceをご利用下さい。
  5. Hi, I've working with a model defined with shell finite elements on Hypermesh 13 and have been having trouble after the definition of the properties cards of the model. When I specify the thickness of the surface, a lot of penetrations (on more than 2000 elements) appear on my model and the automatic fix tool doesn't seem to work on them. I've verified and there aren't any geometrical intersections on the surfaces. My questions are: How can I avoid such problems or configure the model in order to prevent them? When defining the thickness of a surface, this surface is assumed to be a mid plane so the thickness is distributed equally to both sides? Can this be modified? Thank you in advance for your help.
  6. Hi all, /RWALL was used for edge drop simulation. However, the penetration was found. The edge had a small initial distance to the rigid wall and a distance was used to define the slave nodes. How to solve the penetration? Roy
  7. Elvis

    Contact Penetration

    Hello, i am simulating a contact (slide) between a pin and a lug. At the beginning of the motion everything is fine, but at the end the pin is penetrating the lug. The pins displacement is implemented with a constraint. I already tried to change master and slave, but it didn't work. I have no idea what to do next, do someone have some hints maybe? I attached a screenshot of my card settings and the movement of the pin.
  8. Hi everyone, I'm trying to model a cylindrical section being held between a grip that tightens around it. When I look at each jaw however, I have a contact pressure concentration in one area and I can't seem to find out why. I'm using Optistruct V13 and I use the auto-contact tool to create the contacts between each component. I have checked for penetration between these components and there is none (there is between two other pieces but I do not look at these). I have quite a fine mesh as I'm looking at this specific area (mesh size 0.5mm). Does anyone know what I could do to get rid of this point? Could it be that these nodes are slightly irregular and 'sticking out' slightly from the component? Thank you for any help you may be able to give me!
  9. Hypertuga

    Initial Contact

    Hi there, Is it possible to define an initial contact between to surfaces in HyperCrash, while running RADIOSS, so that there isn't neither a gap nor an initial penetration? Thanks
  10. Hypertuga

    Mesh Refinement

    Hi there, I m performing a 3-point bending analysis on a beam (L=250mm, Squared Cross-section 30*30) and once I refine my mesh to a certain degree (elements' characteristic length < 0.5mm) I start getting error messages sent by RADIOSS. The first tells me I have initial penetration on my self-impact interface and the second is message error id 22: ShellID ... has 2 identical nodes that are not 3&4. Any idea on how to solve these issues? I ve already tried to decrease the minimum gap for initial impact, but it didn't work. Any help would be great Thanks
  11. Hello, i try to mesh a Wing for CFD Analysis with VWT. In the Analysis of the Mesh i have a lot of intersections and the automatic fix is not working. The Endplates are out of Solids. The rest of the Wing is out of Surfaces. I deleted the solids and kept the surfaces of the solids but there was the same problem again. How can i remove those self intersections? (see dropboxfile) or Is there maybe a way to trim components with other components and merge the surfaces of those components? Mesh: https://www.dropbox.com/s/vqmqcbc4o0fpayl/FrontWing.hm?dl=0 (CAD modell http://www.dropbox.com/s/fn9f7msqx0cowta/frontwing.IGS?dl=0 )
  12. Hi, I have multiple solid components. For my Analysis, I'd like to connect some of the components in certain Areas, but not everywhere where the components "touch". In order to do that, I equivalenced some of the nodes of the two components, which works absolutely fine for my model. But: I would still like to have some of the solids' surfaces not to be connected with equivalenced nodes, but at the same time the surfaces (that are next to each other and in undefined contact) should not be able to penetrate each other during the nodal displacement of a static analysis. How can I create the option that a surface is defined as "not penetratable"? I tried different things, for example creating contact surfaces on each component. But that does not work as I thought it would. Could anyone help me, please? I would be happy to receive any kind of hint or short explanation. Thank you! Regards Hampel
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