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Listen... Try to be more polite. And I asked for "N forces" and Daniel said that "Normal Forces: prefix F" then dawn said "N stand for normal force in shell section" That was not very clear to me.... I know basic thery of stryctures, but in Italy we use quite a different simbology. So sorry if...

Yes, and what does N stand for? I don't understand it thanks

Hi, when I open the "element force/stress contour for shell" dialog, I find the option to choose M1 M2... but I don't know what N1 N2 and N12 are. I've looked in the manual but I've found nothing. thanks

Hi, could you please explain better what do you mean with: "Modal analysis can capture behavior which can then be used for a nonlinear analysis." Do I have to apply to the structure a force (in the non linear analysis) with the same frequency that I found on the modal analysis? thanks

Hi everybody, I would like to make a modal analysis of a structure to find its frequencies, the problem is that the cable element, as stated in the help, is used only in nonlinear combinations, so if you put a cable, the modal analysis will thing, and this is wrong, that it is a frame with...

probably with a gap element

Hi, what kind of shell/solid elements does sap2000 use? Constant strain, linear strain? thanks

Hi, when I open the "element force/stress contour for shell" dialog, I find the option to choose M1 M2... but I don't know what N1 N2 and N12 are. I've looked in the manual but I've found nothing. thanks