EdwardNigma
Aerospace
Hi everyone,
I work in aircraft interiors, and we often ask our suppliers to validate their FEMs using a simplified box model with floor beams that represents a galley. I mainly review their stress reports, where they reference FEM data, through hand analysis, and interface loads review through external load balance and CG check. In these FEM validation models, or the actual FE models for new configurations, the floor fittings are typically represented using spring elements (CELAS1) and rigid connections (RBE2) to simulate the load path correctly.
With this in mind, I'm interested in creating similar models. I’m able to define spring elements directly in Nastran, but I’d like to know the correct workflow for modeling them within Patran’s GUI. While there’s plenty of documentation on elements like CQUAD, TET10, CBAR, and MPCs, I haven’t found much information on how to create CELAS or CBUSH1 elements in Patran.
Does anyone have experience with this and can outline the steps? Ideally, I’d like to match the modeling approach our suppliers use for their floor fitting representations. Any guidance would be greatly appreciated!
Thanks in advance!
I work in aircraft interiors, and we often ask our suppliers to validate their FEMs using a simplified box model with floor beams that represents a galley. I mainly review their stress reports, where they reference FEM data, through hand analysis, and interface loads review through external load balance and CG check. In these FEM validation models, or the actual FE models for new configurations, the floor fittings are typically represented using spring elements (CELAS1) and rigid connections (RBE2) to simulate the load path correctly.
With this in mind, I'm interested in creating similar models. I’m able to define spring elements directly in Nastran, but I’d like to know the correct workflow for modeling them within Patran’s GUI. While there’s plenty of documentation on elements like CQUAD, TET10, CBAR, and MPCs, I haven’t found much information on how to create CELAS or CBUSH1 elements in Patran.
Does anyone have experience with this and can outline the steps? Ideally, I’d like to match the modeling approach our suppliers use for their floor fitting representations. Any guidance would be greatly appreciated!
Thanks in advance!
