"PSEUDO EXCITATION METHOD OF DIRECT SOLVING GROUND MOTION EQUATION OF MULTI-DIMENSIONAL AND MULTI-SUPPORT EXCITATION "

This work is concerned with the input and implementation issues of the pseudo load in the finite element software for a pseudo excitation method. The input of ground motion is achieved more expediently through a “place large numbers” approach. Therefore, the pseudo excitation is swiftly extended from one-dimensional and multi-supports (ODMS) to multi-dimensional and multi-supports (MDMS), and the motion equations are solved directly through absolute displacement. Compared to the traditional MDMS pseudo excitation method, the directly-solving method through the absolute displacement does not decompose the absolute displacement into quasi-static and dynamic relative displacement items, avoids solving the static influence matrix, more efficiently realizes the input of pseudo excitation loading and the analysis of multiple-degree-of-freedom structures in the finite element software, and does not require a special program. The pseudo excitation method is further expanded in theory and engineering applications.