analysis Transient

[shenxian]

hi.
who can tell me in "analysis Transient",The results of the analysis use how many the number of Vibration mode .
because in sap2000,When analysis the time history ,you should the number of Vibration mode .
thank you .

[fmk]

OpenSees will include all modes .. it does not do a modal transient analysis .. how many modes are captured in the analysis will depend on the dT you select.