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  1. spikefer

    NX Nastran

    Hi nlgyro, Thank you for the reply! Unfortunately, after I posted the thread I found out in the "Advanced Nonlinear Theory and Modeling Guide" of Nx Nastran that with SOL 601 ESE doesn't work. In fact, not only this but also some other outputs (e.g. stress/strain for beam element) are not...
  2. spikefer

    NX Nastran

    Hi everybody, I am managing a SOL 601,106 with Nx Nastran (NX8). Does anybody know why even if I have required to plot the STRAIN ENERGY in the case control, nothing appear when I load the results? Thanks in advance
  3. spikefer

    Nonlinear buckling

    Hi, I am trying to identify a structural instability with nonlinear solution (106) in a very simple model, a beam loaded by a force acting with a 2° angle of incidence (to generate the lateral instabililty). What happens is as follow: - setting "ITER, 1" as "KMETHOD, KSTEP", the simulation, as...
  4. spikefer

    Follower Forces in NX NASTRAN

    Hello to everybody, is anyone able to tell me how can I set a force to be follower (i.e. mantain its direction against the grid point to which is applied) in NX-NASTRAN environment... Thanks in advance!
  5. spikefer

    Follower Forces in NX8

    Hello to everybody, is anyone able to tell me how can I set the force to be follower (i.e. mantain its direction against the grid point to which is applied) in the ADVANCED SIMULATION environment of NX8? (or at least in NX-NASTRAN environment...) Thanks in advance!
  6. spikefer

    CBUSH-1D

    Hello everybody, does anyone knows how to model a CBUSH-1D in Femap (10.3.1)? I find easily the card for the CBUSH property, but nowhere information about the mono-dimensional one. Thanks in advance!
  7. spikefer

    Cbush preload

    Dear all, does anyone has an answer to this two problems related to bush preload? 1 - in a 106 simulation, I modeled a nonlinear spring with a cbush with nonlinear F_VS_Displ dependency. Now I am looking to set a preload to this element, and I tried to set the curve to have a non-zero initial...
  8. spikefer

    Non linear spring in NX Nastran 8.0

    Dear BlasMolero, thank you so much for your comprehensive reply! since I notice your experience in Femap/Nx nastran, just another question: what is your suggestion to preload tha above-mentioned non-linear spring? It is better to manage a restart-analysis or is there some kind of initial offset...
  9. spikefer

    Non linear spring in NX Nastran 8.0

    Hello Everybody, Does anyone can tell me how can be a non-linear (Force vs displ.) modeled in Nx Nastran 8.0? I need to include non linear spring in a 106 (or 601) simulation, and I know that Nastran allow to do that using the PBUSHT card. Unfortunately I didn't find any reference about that...
  10. spikefer

    Non linear spring in NX Nastran 8.0

    Hello Everybody, Does anyone can tell me how can be a non-linear (Force vs displ.) modeled in Nx Nastran 8.0? I need to include non linear spring in a 106 (or 601) simulation, and I know that Nastran allow to do that using the PBUSHT card. Unfortunately I didn't find any reference about that...

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