to import new time history function in Etabs.. Go to define list, then define time history function, from that window choose function type (from file), then function file and browse the file of ur ground motion ..
But I need some of those time history function that are not given in ETABS function file. And those function should be collected from PEER database. I have solved the problem yesterday successfully.
Dear Md Abdullah You can go to the PEER Website and Copy the Time History Data of Any Earthquake..Copy it in Note Pad and Add it in time History Data folder.Then from there you can Upload in ETAB