force as a sine function
force as a sine function
(OP)
Hi All!
I would like to define a force in frequency domain as a sine function of the frequency. I am planing to use *amplitude option to define the sine function, but I am not so sure about it. Does anybody know how to manage this problem?
Thanks in advance,
Eser





RE: force as a sine function
I think you could use (in the case you are not using CAE)
the following code to define the amplitude:
AMPLITUTE ,NAME=my_amplitude_name, DEFINITION=PERIODIC
1,f,t0,A0
0,A1
where f=frequency, A0=value of free term in Fourier series, 0= coeficient of the first cosine term , A1=coeficient of the first sine term, t0=the initial time
You could see the Keyword Manual for other details.
Then you have to attach the amplitude definition to the load definition by setting the AMPLITUDE=my_amplitude_name
in the CLOAD or DLOAD definition.