Leila Najafi @ on
incorporating higher modes in analysis?
I have written a code for nonlinear time history analysis of a simple 3D model but while assessing the results I have found that they are only based on first mode of vibration and the 2nd and 3rd mode did not incorporate in results. Also when I want to know the 2nd or 3rd mode, the code report an error. Have anybody faced to a problem like mine Please help me solving this problem Thanks. Story displacement by Sap: umax3:4.7 cm umax2:6.01 cm umax1:4.7 cm
Story displacement by opensees: umax3:12.59 cm umax2:6.8 cm umax1: 2.13 cm