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Recent content by spyros_ar

  1. spyros_ar

    Solid elements vs Continuum shell elements for modelling a core in a sandwich structure

    Thanks for the advice. But still I don't understand why these two modelling approaches provide different results. And which one is more reasonable
  2. spyros_ar

    Solid elements vs Continuum shell elements for modelling a core in a sandwich structure

    Yes I have a single layer of continuum shells
  3. spyros_ar

    Solid elements vs Continuum shell elements for modelling a core in a sandwich structure

    The load I applied is a bendinf force and moments around X,Y at a reference point which is rigid-body tied to one end
  4. spyros_ar

    Solid elements vs Continuum shell elements for modelling a core in a sandwich structure

    Yes the continuum shells are only for the core and again are tied to the face sheets (S4R). For both cases, the core is anisotropicand I assign material orientation via "Material Orientation Modulus"
  5. spyros_ar

    Solid elements vs Continuum shell elements for modelling a core in a sandwich structure

    Dear all, I am performing a linear buckling analysis of a sandwich structure, specifically a tapered cylindrical shell with reinforced patches. The face sheets are modeled using conventional S4R shell elements and are tied to the core vie TIE constraints. For the core, I used two different...
  6. spyros_ar

    Shell-Solid interaction

    Alright. But how about the overlapping area between shell thickness and solid core. How abaqus threats this?
  7. spyros_ar

    Shell-Solid interaction

    Dear Abaqus users, I am modeling a sandwich structure in Abaqus with conventional shell elements for the face sheets and solid elements for the core. The face sheets include reinforced patches, leading to variations in thickness and ply sequence. The top and bottom surfaces of the shells have...
  8. spyros_ar

    Modelling a sandwitch structure in Abaqus

    It's a honeycomb with hexagonal cells. The thing is that i don't have any other parameters besides compression and shear moduli as well as compression and shear strength. Also, I am not sure what damage model I should use for the core. That's why I thought to simplify the problem
  9. spyros_ar

    Modelling a sandwitch structure in Abaqus

    For the core, I have values for E3, G13, and G23, with small values for the remaining parameters assumed based on literature. My focus is not on the detailed impact event, such as delamination or the core's exact failure mode. Instead, I aim to assume a post-impact damage state and predict the...
  10. spyros_ar

    Modelling a sandwitch structure in Abaqus

    Dear all, I am working with a tapered cylindrical shell featuring the following layup: [45, -45, Aramid honeycomb, -45, 45]. The face sheets are made of CFRC. For the honeycomb core, I have the values for E1, E2, E3, ν12, ν13, G12, G23, G13, as well as the compression and shear strengths in...
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