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i am working on materials characterisation and i have a materials made of two layers one layer have more air resistivity than the other. the simulation results shows that having the most resistive in the direction of the sound source makes the absorption in kundts tube better and the absorption...

i want to construct a stress-strain diagram after a linear analysis and i dont know how to define load increaments before the analysis knowing that i have a static load and i am working with nastran solver?

i added friction of type (deformable body) and it had no effect on my model??

Hi , i would like to study the behavior of a specimen under compression and after so i want to know how to make to successive load cases on the same model using nastran solver because nastran treats each load case separately?