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Simon Križnik

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  1. The nodes of the imported loads are equivalenced with those of the detailed model which are overlaying each other as a consequence of importing the free body loads. In the attached tutorial (HM-9010) this is done in step 10. I see no reason why it can't be done using displacement data.
  2. The icon used to start Hypermesh: I have it on my Windows taskbar, and it can also be found in the start menu, or search programs and files for "Hypermesh".
  3. Tied contacts are created automatically (along with materials, properties,...) when creating connectors with post script (see the end of the previously shared tutorial). Type 2 tied contact: VII_b_Interface Type 2 in RADIOSS - Altair University
  4. Hi, Radioss is a solver for highly non-linear problems under dynamic loadings by default. The analysis type is defined through control cards, for example: implicit/explicit method, dynamic/quasistatic, 3D/plane strain/axisymmetric analysis,... In Radioss the concept of loadsteps can be applied through multiple engine files in which the "subcases" can only be solved sequentially. For more info refer to https://altairuniversity.com/free-ebooks/free-ebook-crash-analysis-with-radioss-a-study-guide/
  5. Glad to help. Actually, location: elements have to be selected only on one side. The connection of adhesive brick elements is done through type 2 tied contact and is able to connect elements with different mesh sizes.
  6. I have explained how it is supposed to work. The issue is likely in your model and I can only guess without the model.
  7. Hi, Right click HyperMesh icon> Select Properties and change the "start in" location to another directory and try again.
  8. This is strange. Can you share the model file in .hm format?
  9. Hi, under Export options, you have set the Export to Custom. Click Select Entities which will take you to Entity State browser where you can define which entities are exported.
  10. Hi, it is possible- please refer to the following documents and links: https://insider.altairhyperworks.com/free-body-diagrams/ https://altairuniversity.com/learning-library/radioss-sub-modeling-cut-approach/ Free Body Diagrams.pdf Free Body Diagrams (FBD).pdf HM-9010__Free_Body_Diagram.pdf Subcase Specific Modeling.pdf
  11. Hi, control cards can be enabled or disabled: The same can be done by checking Status parameter of the control card (in the entity browser):
  12. Hi, Is there a reason to add complexity with frames and imposed displacements? The gravity load also on floor 2 and its rigid body nodes will result in a zero relative velocity with respect to the ball. An example of imposed velocity through frame can be found: drop_test_IMPVEL-edit_0000.rad
  13. Hi, I am able to create an area connector of type adhesive (contact) in Radioss (Hyperworks 2019.1 in Block format 140 user profile). The red rectangle indicates the connector realization failed for some reason (usually due to inappropriate tolerance).
  14. Hi, Unfortunately, no material law supports strain hardening exponent exceeding 1. As a workaround, try with material law 36 which is an isotropic elasto-plastic material using user-defined functions for the work-hardening portion of the stress-strain curve for different strain rates. While this material law does not have the convenience of describing the work hardening with only a few parameters, it allows describing the work hardening in greater detail with tabulated input.
  15. Hi, there were no Sol2SPH examples so I created it. In this example, the solid is switched to SPH upon element deletion (defined with energy failure model). Alternatively, the switch can be initiated by minimum timestep defined in DT/BRICK/DEL. For more information refer to the attached documents and link. http://blog.altair.com.cn/article.html?id=ac9r9ko3q0dnvst97iei1ogp6p8ah5xk Solid to SPH Option (Sol2SPH).pdf Sol2SPH Particle Behavior.pdf sol2sph_0000.rad
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