Hi! I wonder how to model a rope/cable element in dynamic analysis when tension/compression appears. What are the methods to performing it and proper solvers for that methods. Example of parameters used would be great!
Ps: Normally i modeled rope with rod, but at dynamic analysis that rod gets...
damn ;/, i dont know how to understand that part : "the main problem will be the cause an impact lke excitation, exciting all resonances affected by the impact".
At calculations of ship motions i assumed that ship motions are not affected with crane presence and ship-crane system during that...
Hmm but ship RAOs, irregular waves JONSWAP PSD and SRAOs=RAOs*PSD are in range of 0.2-3 [rad/s]. Its not tens of Hz. Speed of vibrations spread in steel structure is speed of sound. So vibrations will appear during ship oscillations. Theres no such force that would stop them, xD i think. Mine...
Hi!
I wonder is it resonable to use following analysis (below) for rigid body dynamics:
- analysis version 1: normal modes/eigenvalue --> frequency/harmonic response
- analysis version 2: transient dynamic/time history
for stiff rigid body in dynamic analysis. In example for crane on ship on...
Hi!
Im trying to run femap from within python script. I was trying to use win32com, but im doing something wrong. Have maybe someone have some expirence in that? For example, how to run in python equivalent code of vba (its writing to txt all nodes and elems, what im reading later in python to...
damn, i made a mistake, and dont know how to edit post:
that:
"f(t)[m^2/s] in time domain --> 2*FFT"
should be:
f(t)[m^2/s] in time domain --> (2*FFT(f(t)))^2 / (dPulse) = F(pulse)[m/s^2]^2[rad/s]^(-1); where Pulse=[rad/s]"
Hi!
Do anyone have some expirence how to define some function in femap? I mean do same with femap api like doing [main menu] Model -> Function (Define Time or Temperature Dependencies).
I have some data of accleration spectral density ASD that i want to put it to function vs Frequency in...
Hi!
I have ship-crane system as one rigid body. I calculate 3d disp/vel/acc of every point of ship-crane system for 3h storm using ansys-aqwa and some numerics. Now i need to apply accelerations from crane-ship movements to crane points in FEMAP. I need it for mine beachelor engineergin thesis...
