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mrtimwinkler last won the day on January 15 2019

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  1. Hello, how do i screen the element normals of brick elements/ surface normals of a part to check them for contact definition? Thank you very much! Tim
  2. I found it out my self. There is a master node in the rigid wall, where you can define a separately time history record of the displacement.
  3. Hello Ivan, thank you very much for your answer! How do i record the displacement of the rigid wall? In the time history options of the rigid wall you can choose the forces as variables only. Unlike with rigid bodys there is no master node in rigid walls to record the displacemnt separately. Thank you very much for your help. Tim
  4. Hello, how do i plot the rigid wall force over the rigid wall displacement and not over the time? Thank you very much! Tim
  5. Hello and thank you very much for your answer! The problem is not that the failure criteria is not reached (i have tried all of the Ioff choices with very low failure criteri limits) but that the element is not been deleted. The stress is always set to zero but the element is not been deleted. Is this a problem of the element type or property? In the same model with shell elements the elements are deleted. In the reference guide they say the deletion is posible for shell elements and thick shell elements and my model is made of thick shell elements.
  6. Hello, i simulate a three-point-bending crash test of a FRP. Therfore i use 1 solid element over the thickness, a thick-shell property (22) and the material law 25. In the material law 25 i use the energy failure criteria with the element-deletion flag Ioff=2 and a specific Wpmax. Unfortunately, when the energy failure criteria is reach, the element is not deleted but the stress is set to zero and hourglassing is beginning. How do i let the elements be deleted if the failure criteria is reached? Thank you very much! Tim
  7. Hello, i have a FRP with the following elastic parameters: E1, E2, G12, nu12. The parameters needed in the material card are E11, E22, E33, NU12, G12, G23, G31. E11 = E1 E22 = E2 E33 = E2 NU12 = nu12 G12 = G12 G23 = ? G31 = ? How do i find the missing two shear modulis? Thank you very much for your help! Kind regards Tim Winkler
  8. Hello, what are the RST-vectors? How the orthotropic direction is defined? Thank you very much for your help Kind regards Tim Winkler
  9. Hello, i like to simulate a tensile test of an UD FRP in HyperCrash. Therefore i use BRICK elements, the material LAW25 and the propterty TYPE6. To model the 90° fiber direction (perpendicular to the velocity boundary condition) i made a skew (to see in the bottom right corner of the pictures 2 and 3) and used it in the property type 6 to define the orthotropic direction (to see in picture 1). Now the RST vectors (what are these?) dont have the right and uniform orientation (to see in the pictures 2 and 3) How do i define a 90° fiber direction? Thank you very much! Tim
  10. Hello, in the RADIOSS reference guide (2017, page 328) they say the material law 25 contains strain rate effects. In the Tsai-Wu yield criterion, where the strain rate acts, the strain rate only influences the yield strengthes. How do i get strain rate dependent elastic stiffnesses? Thank you very much! Kind regards Tim Winkler
  11. Hello, how do i create different loadcases in one model to calculate them all in one analysis? For example: there is one model with one part, one material and one property and load_1, load_2, bc_1 and bc_2. Now i like to compute the behaviour of load_1 + bc_1 and the behaviour of load_2 + bc_2 in one analysis. Thank you very much for your help! Kind regards Tim Winkler
  12. Hello, where do i finde referencess to the meanings of the control cards in HyperCrash? Thank you very much! Kind regards Tim Winkler
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