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Hi, I have some questions I was hoping someone could answer. I am trying to model a sandwhich structure with carbon fibre skins and aluminium honeycomb core and then perform a 3 point bending test in the software if possible. 1. Could someone please explain what the reason is for selecting PCOMPP, PSOLID etc, what are the reasons for choosing one of them over another? 2. Which compersite property: PCOMPP, PSOLID, PSHELL, etc, do I need to select for the task I want to achieve (3-point bending simulation)? 3. Another question relates to my understanding of the MAT 8 card....would I be correct in saying that as MAT8 only asks for the in-plane properties, it would not be possible to get proper results for a 3-point bending test in the software? (Or does the software still work this out?) 4. Would I need to use the MAT9 card for what I am trying to do and in that case what composite property do I select, PCOMPP, PSOLID, PSHELL, etc? 4. If I select for example PCOMPP for the honeycomb properties, do I have to select PCOMPP for the carbon fibre skin properties? Regards
Hi all!! I have a question, which might seem quite obvious but it is driving me crazy. I am modelling honeycomb panels with 2D surfaces. Until now I have always modelled this material as 2D orthotropic, so with MAT8. Now my materials have changed and the following question arises to me: For the core ply, information available from manufacturer data sheets is the following: E3, G13 and G23. However, if I want to treat my model as surface, it is not possible with MAT8, because material parameters that I can introduce there are E1, E2; G12, G23, G13 and Poissons ratios. Is there any estimation or any conversion possible in order to make it work with shells? Another possibility is to model it with solids and using the Optistruct Engineering Solutions tool, which enables me to create a solid out of shells; however, when using it all contacts between surfaces are lost. Has someone faced the same problems when modelling honeycomb panels? It would be of great help. Thanks in advance!! Regards, Andrea