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Modal stiffness and mass matrices extraction
Thank you very much for your prompt response jamesdean2! I tried your method, nevertheless i ran into two issues: 1) Matrices obtained are in the a-set, not in the h-set(modal) 2) Eigenfrequencies solution in MATLAB do not yield results similar to the NASTRAN ones. Has anyone had similar issues? -
Modal stiffness and mass matrices extraction
Hello to the community! I' m trying to extract the modal stiffness and mass matrices from a real eigenvalues analysis (SOL 103) for an aeroelastic simulation. I've tried to add DMAP alters for the Mhh and Khh matrices, nevertheless I haven't managed to extract them at all. Is there anyone... -
FSI Staggered Simulation
Thank you very much for your prompt response dmapguru! Unfortunately i do not have access to the openFSI and HSA toolkits. Do you think that writing the element stresses from the previous iteration via the ISTRESS entry for the next iteration within the environment of the SOL400 is the way to... -
FSI Staggered Simulation
Hello everyone!!! I would like to perform a staggered FSI simulation in NX NASTRAN. Initially, the aerodynamic loads, obtained via an in-house code, are applied to the FE model in NASTRAN. The linear solver SOL 101 is then used to calculate the displacements. The deformed structure is then used...- Spyros07
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- Replies: 0
- Forum: Siemens: UG/NX
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FSI Staggered Simulation
Hello everyone!!! I would like to perform a staggered FSI simulation in NASTRAN. Initially, the aerodynamic loads, obtained via an in-house code, are applied to the FE model in NASTRAN. The linear solver SOL 101 is then used to calculate the displacements. The deformed structure is then used to...
