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  1. whitebalance

    Help with scripting in Catia - AFC

    Hi, I'm have created many Surface meshes in AFC. In the name of each one of them I have written the thickness of the elements in the mesh. I would like a script that loops through all the meshes finds the value of the thickness in the mesh name and applies a 2D property. (The material is...
  2. whitebalance

    High thermal expansion at "normal" outdoor temperatures

    Hi Dvd, What I'm looking for is materials that have the highest thermal expansion rate in the temp range of -20 and 30 degrees celsius, which is also formable and can be used to create a band. W
  3. whitebalance

    High thermal expansion at "normal" outdoor temperatures

    Hi, I'm looking for a material with a high thermal expansion rate in the temperatur range of -20 to 30 celsius. My challenge is to find a material type that can be made into a band/"rope". Anyone with a good suggestion? W
  4. whitebalance

    Optimized Composite Box Beam Design

    Hi, I'm trying to think of an optimized box beam design for a structure that is 30x7meters long and has a maximum height of 1.7m. Does anyone know of feature that uses a optimized box beam design? W.
  5. whitebalance

    von Mises vs Tsai Wu

    Thank you for the answer, RPstress! Another question came to mind here: If you have a structure made out of composites and you assume that the laminate is considered in-plane isotropic (i.e. CSM). When considering plane stress, wouldn't a von Mises stress color plot and a Tsai-Wu failure...
  6. whitebalance

    von Mises vs Tsai-Wu

    Hi, I'm trying to find out for what assumptions the von Mises yield criterion equals the Tsai Wu failure criterion. Say you have a FE tsai-wu plot and a von Mises plot. Under what circumstances would the color plot look the same? Is it so that if you assume plane stress and input isotropic...
  7. whitebalance

    von Mises vs Tsai Wu

    Hi, I'm trying to find out for what assumptions the von Mises yield criterion equals the Tsai Wu failure criterion. Is it so that if you assume plane stress and input isotropic material properties into the Tsai-Wu criteria the result will be the same as von Mises yield criteria? WB
  8. whitebalance

    Splitting odb (one odb per step)?

    Your suggestion is my last question I think?! My model is detailed and has many loads, one for each element and a amplitude related to the load. It is a lot of work changing the amplitudes so that the the seperate analysis start with the right pressure magnitude. Is it possible to use the same...
  9. whitebalance

    Splitting odb (one odb per step)?

    Ps: the magnitude of my pressures are decided by a 'total-time'-amplitude.
  10. whitebalance

    Splitting odb (one odb per step)?

    Thank you for your reply. Using time points will only reduce the size of the odb, not create several odb's? I need output every 0.01sec. Say that i have 5 steps of 1 sec each, I want each second to be written to seperate odb files. Is this possible without splitting the analysis in 5? If not...
  11. whitebalance

    Splitting odb (one odb per step)?

    Hi, I have an static analysis with 5 steps. The odb for the full analysis is big in size. Is it possible to say in the input that the results from each step shall be written to seperate odb's? K
  12. whitebalance

    Inertia Relief of object dropped in water

    Hi, I'm trying to analyse an object which is dropped into water. My model is run as General Static, the material is linear elastic. The effect of hitting the water is modelled as Pressure that varies based on the Amplitude-option, accelerations are also applied. When running linear geometry my...
  13. whitebalance

    Applying Different Properties to one mesh in AFC?

    Hi, I am wondering if it is possible to mesh a plate in Advanced Meshing Tool (one mesh for the whole plate). And then apply different material properties to different sections? Say I have a 1x2m plate and I want the thickness of half the plate to be 10mm and half to be 15mm. Do I have to...
  14. whitebalance

    Warping Constant

    Hi, I have a beam profile as shown in the attachment and I need to find the Warping Constant for the profile. It is not possible to create this profile using the CAE (arbitrary profiling will not make three or more beams from one point), and when using the MESHED BEAM CROSS-SECTIONS it does not...
  15. whitebalance

    Creating Sets of elements in Abaqus for Catia

    Hi, I'm modelling a marine structure in Catia. First GSD and then using AFC - Advanced Meshing afterwards to mesh the structure. One issue I'm having is that I would like to Group elements and then apply material properties and thicknesses to these groups. Is this possible or is it only possible...
  16. whitebalance

    Damage Criteria for Elastomer (VUMAT)

    I'm modelling a sandwich construction in Abaqus in bending (almost like a three point bending test). The core is modelled as solid and the faces are modelled as skins. For the faces I have no problem in applying a failure criteria that deletes the elements. But for the elastomer its...
  17. whitebalance

    Import NAPA model to Catia

    Thanks for the reoly derek! I'm familiar with the iges output. I'll look more into that. Do you know what my options are regarding what to export from napa? Can i get the skin without any lines? Wb
  18. whitebalance

    Import NAPA model to Catia

    Hi, I'm modelling a vessel in Catia, and I have a Napa modell. Is it a straight forward import? What is the best way to import this modell to Catia? wb
  19. whitebalance

    Hull shell model- error: branched edges when using loft function

    Hi, I'm trying to modell the hull of a ship. I have 3 of the decks, but when trying to use the loft function I get an error saying that the area I'm choosing has branched edges. Does anyone have ny tips with this? I do not fully understand why I get this error. The area can not be a loop...
  20. whitebalance

    Moment of a perpendicular frame

    desertfox, this is the sketch I'm working on. Calcs: Pre-tension: tensile stress = Pre-tension pr bolt/area pr bolt Tensile force: F*dx = Fx*dz tensile stress = Fx/area Shear stress: Each bolt withstands a vertical shear force: Fnv = F/4 shear stress = Fnv/bolt area Resulting force: Each bolt...
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