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Found 2 results

  1. Hi there, my problem is as followes: i built up a squarish composite plate (carbon) with orthotropic material property. I edited the laminate with "symmetric" option to realize the orthotropic material behave. Now my problem is that I want to check the material behave varying ply direction and ply thickness. So the plate should obtain 10 mm height on the left edge and 9 mm on the right edge to simulate an angular load initiation, Now the symmetric laminate option causes a result which I dont want to realize (see attachment). Can you tell me how to realize that? Maybe with shell to solid conversion (how do i get there?)? Regards
  2. Hallo everybody, I want to optimize a composite monocoque for a formula student car. For this I want to take a composite sandwich. But I still get errors, when I start the analysis. First I want to create a plate (275mm x 500mm) to look if it works like this. Here is what I have done so far: 1) load the CAD data in hyperworks 2) mesh the geometry with elementsize 4 3) create 2 materials. One for the cfk (MAT8) and one for the core (MAT9ORT) 4) create 2 properties. One PCOMPP for the laminates and one PSHELL for the core 5) create 5 plys. 2 for the inner layer, 2 for the outer layer and one for the core. Assign material, thickness and elements to the plys 6) create 3 sublaminate. One for the inner layer, one for the outer layer and one for the core 7) create a sublaminate with the 3 sublaminates 8) make a "solid to shell conversion" with laminate "core". Now there is a new component with an SOLID property. Assign material to the solid Property. (MAT9ORT) 9) assign PCOMPP property to the first component 10) create two loadcollectors for the force and for the constraint. Create a force in the middle of the plate and 4 constraints at the corners and then create a loadstep with these two loadcollectors. This is just a trial if the analysis works without failures 11) make a "GLOBAL_OUTPUT_REQUEST" with CSTRESS and CSRAIN 12) start analysis with Optistruct But everytime I start the analysis, I got an error. When I fix one error there comes another. Can you please help me to find my mistake? And can you tell whereon I have to pay attention on, when I want to make a Composite Sandwich with sublaminate and interface Laminate. Thank you for your responses. Regards
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