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Amar17

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Everything posted by Amar17

  1. Thank you George sir! How one can ensure that? I think, since the pyramid elements are automatically generated at interface of the two configurations (hexa and tetra), all the nodes should be connected there. So why do we need to check the load transfer?
  2. Dear all, anybody please tell me, whether mixed mesh (Hexa+Tetra+Pyramid) is compatible with the stress analysis under the transient loading in radioss. The time duration of the load is very small. Is there any concern in doing mixed mesh in such a loading condition?
  3. @Prakash Pagadala Do we need to create skin elements for the case of 2d to 2d T connection? And also, are they required when a 2D plate is parallel to the solid surface?
  4. Thank you sir! I want know whether is it mandatory to project the mid nodes (as it is said in the book that 'It is not acceptable if mid nodes are not on the geometry'). Isn't it that the shape of the elements will get of distorted? Does it create any problem?
  5. Hello everybody, May I know whether it is necessary to project the mid nodes of second order tetra elements on the geometry. I have read it in the book 'Practical Aspects of FEA' that it is not acceptable if do not do so. If it is necessary then please tell me how can I project mid-nodes on the geometry. Thanks in advance
  6. Hello everyone, I want to do hexa meshing on the geometry shown in the figure: How to do it while maintaining the mesh quality? Also I want to go for maximum possible element size. The .hm file of the model has been attached for the reference. ExBracket.hm
  7. I tried to do what you suggested but I could not understand how to use the option- 'mappable' to check whether the given geometry is mappable or not? Does this option also tell that how the geometry could be mapped?
  8. Thank you sir, I got it done some other way, but would you please explain how may we use geometry color mode to see part is mappable or not?
  9. Thank you sir, I am using Radioss (v12.0) solver. Do we need to take of any concerns after defining the contacts between two different (tetra and hexa) meshes?
  10. Hello everyone, My questions are: I have an assembly; 1) Is it possible to mesh one part with hexa mesh and other with tetra mesh? 2) Two parts with different mesh densities (no matching nodes)? 3) One 2D and other 3D part with different elements and with no matching nodes? Please also tell me what type of contacts are to be used for welded joints (I am not simulating the welds) in explicit analysis in the above three cases?
  11. Hello everyone, Here is an error I am facing while trying to hexa-mesh the component using the tool- 'solid map'. It is saying that 'an edge is shared by 3 or more input faces'. I am not able to understand the meaning of this error and also not able to find any alternate way to hexa-mesh my component. The image of the component has been attached for reference.
  12. Thank you sir! I went through the answers of the query (by mirino) you suggested. It was helpful. But additionally, I want to know how to do tetra meshing for the remaining parts taking penta elements at the interfaces of hexa and tetra elements? Please also tell me the path to various pages and options in HyperMesh to get this mixed meshing done. [I have generated the hexa mesh for some of the parts].
  13. Dear sir/ Ma'am, 1) I have a 3D model for which I wish to do Hex meshing. I have divided my model in several parts and I could hex mesh some of them. But since I am not able to hex mesh all of them I want to go with a mixed meshing i.e., tetra meshing for the remaining parts. May somebody please tell me the way to achieve what I am wishing to do? [Please tell me the path to the suggested options in the hypermesh] I could have meshed my model completely with the 2nd order tetras but I want to have hex elements at the contacts. 2) Please, also tell me if there is any problem in using mixed (hex-pent- tetra) meshing in the transient (explicit) analysis. What type of elements (including for 2d meshing) are suggested for a transient structural analysis of a large assembly (also for the individual components) having loads applied for milliseconds? [It's not the case of crash analysis] Thank you in advance!
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