Hi Frank,
You probably need to read the astar.pdf to get some backgtound on the specific command prompts for the curves and the type of study. I do mostly frequency response to harmonic input loading and the result I usually am interested in is the transfer function of a certain output node.
Here is a snippet to get started. Remember, you must run the modal analysis in geostar prior to running the dynamics solver, since it just integrates the mass normalized eigenvectors from the modal into displacement.
PD_ATYPE,5,5,1,20,280,20,1,2
c*The PD_DAMPREAD command activates the calculation of damping ratios based on specified Composite Material
c*Damping using the DAMP material property. The command, when issued, overrides information specified by the PD_MDAMP command.
PD_DAMPREAD
c*PD_CURDEF, curve label,starting time, ending time, amplitude of sine function,
c*freq, of sine function, phase angle of sine function,amplitude of cosine function,
c*freq of cosine function, phase angle of cosine function,constant of exponential function
ACTSET,TC,1
PD_CURTYP,1,1,0
PD_CURDEF,1,1,1,20,280,1,,,,,,,,,,,,,,,,
c*239837 coil,,,,,,
c*244932 coil,,,,,,
c*250320 coil,,,,,,
c*247205 coil,,,,,,
c*281768 sleeve,,,,,,
c*293743 sleeve,,,,,,
c*306521 sleeve,,,,,,
c*318412 sleeve,,,,,,
FNDel,239837,fy,239837,1,,
FNDel,244932,fy,244932,1,,
FNDel,250320,fy,250320,1,,
FNDel,247205,fy,247205,1,,
FND,239837,Fy,1,239837,1,0
FND,244932,Fy,1,244932,1,0
FND,250320,Fy,1,250320,1,0
FND,247205,Fy,1,247205,1,0
PD_NRESP,1,244932,,,,
PD_NRESP,1,250320,,,,
PD_NRESP,1,247205,,,,
PD_NRESP,1,281768,,,,
PD_NRESP,1,293743,,,,
PD_NRESP,1,306521,,,,
PD_NRESP,1,318412,,,,
PD_PLOT,1,30,1,0,,
R_DYNAMIC
ACTXYPOST,1,freq,UX,250320,0,1,1,1,250320N
ACTXYPOST,2,freq,Uz,250320,0,4,1,1,250320N
ACTXYPOST,3,freq,UX,247205,0,14,1,1,247205N
ACTXYPOST,4,freq,Uz,247205,0,16,1,1,247205N
c* below are plot requests for the other nodes
c*ACTXYPOST,2,freq,UX,247205,0,14,1,1,247205N
c*ACTXYPOST,3,freq,UX,281768,0,9,1,1,281768N
c*ACTXYPOST,4,freq,UX,293743,0,10,1,1,293743N
c*ACTXYPOST,5,freq,UX,306521,0,11,1,1,306521N
c*ACTXYPOST,6,freq,UX,318412,0,12,1,1,318412N
SETXYPLOT,0,0,10,3,1,1,1,2,8,2,1,1,0,0,14
XYPLOT,1