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Bharath7214

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  1. Hi Prakash. I don't think I can share the file. It is company confidential. I will try to attach a screen shot when I get access to it, Thank you,
  2. Hi, I have a doubt regarding Geometry Autoclean-up option in Hypermesh 14. I was working on a CAD data which required a bit of clean up before I start with my meshing. When I try to use the Autoclean-up option I get a error message saying that "the operation cannot be performed" in the bottom left corner screen of Hypermesh. I would like to know if this is related to a problem with software or does the Auto clean up tool have any limitation with quality criteria set by the user. I have used this version before for many other files and I never faced this problem before. I have attached the user set criteria to this post. Please get back to me on this. Because I cannot move forward without cleaning the CAD data. Thank you.
  3. Hi Prakash, I have attached the .out file. The Iterations will keep on running and finally the solver will end with Convergence not achieved message. Is Contact the issue here? JT_NL1.out
  4. Hi Kash, I am also facing a similar problem and the Non-linear solution is not converging after a lot of iterations. Did you figure out a way to solve this? Thank you. Regards, Bharat Pinapati
  5. Hi George, Thank you for your prompt reply. I went through the document and the hyperview manual, both were very helpful. A lot of information was given on Averaging methods, Resolving types, Layers, 2D & 3D element calculations etc. PS: All the links in the PDF are not working. Thank you. Best Regards, Bharat Pinapati
  6. Greetings Forum Members, I am writing to understand the various result options (especially in stresses and strains) available in Optistruct (or any solver) Post-processing. Usually everyone follows the industry thumb rule of looking at VonMises stresses, Displacement (Mag) and Plastic Strain or equivalent plastic strain. But there are a lot of other result options available but many never seem to use it. I have attached screen shots of the some of the various result options (Stresses and Strains) available below:- Could anyone Kindly go through the above results options and explain the differences between them also establish a understanding of when to use them. For example, 1) what is the difference between VonMises, VonMises (Z1), VonMises (Z2), VonMises (mid). What does the Z1, Z2 and Mid imply? 2) what is the difference between P1 Major Z1, P1 Major Z2, P1 Major Mid and P1 Minor ? Even a simple answer in simplistic terms would suffice. Also kindly share any reference material available in understanding the results? What to look for after the analysis has been completed? Thank you. Best Regards, Bharat Pinapati
  7. Hi George, Happy New Year! Sorry I couldn't respond earlier. I will look into /MAT/LAW83 & /FAIL/SNCONNECT criteria. Please update me if you find anything regarding the same. Thank you. Bharat Pinapati bharath7214@gmail.com
  8. HI George, Thank you for your reply. I have viewed the pdf before and also looked up the hyperworks example Solid spot weld for Radioss Block Format. The radioss block uses the M59_connect and P43 connect for defining the Material and property cards also a Fail_connect criteria property is created. And a Type 2 Tied interface is used. I get all that. But the adhesive material data available to me is E, Rho and NU. It is considered Elastic because it is known not to fail at the applied loads even during non-linear analysis. I always create the deck in Optistruct and convert it to Abaqus 3D. So the RBE3 will be converted to DCOUP3D kinematic Constraints. I have attached a simple adhesive picture modeled in Optistruct using RBE3 and the one that is available in Radioss Block 140 using Type 2 contact. Thank you.
  9. Greetings Forum Members, I am writing regarding a query on modelling of Adhesive connectors in Radioss Block Format 140. I am working on hyperworks 14 and have been using Optistruct for linear Static, Modal analysis and Abaqus CAE for all my non-linear implicit and explicit analysis. I have been exploring Radioss for a while now but I am relatively a new user who is trying to move all my non-linear analysis to Radioss Solver. So, In Optistruct input deck the option to create Adhesive's is relatively simple. Connectors --> Area --> Adhesive --> this will create a brick element for which the desired PSolid property can be directly assigned. The Structural Adhesive is used to join two plastic automotive components say for example the inner and outer panel of the engine hood using RBE3 kinematic constraints between the solid and shell elements. The Structural Adhesive is a elastic material with properties obtained from the testing Lab. The same can be done in Abaqus 3D Solver Deck. But in Radioss Block format the options available are Adhesive spring and Adhesive (contact). So how do I model the adhesive as solid with RBE3 constraints? Or what is the correct method to model the adhesives in Radioss? Thank you.
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