00000cab a22000003a 4500 UP-99796217610121314 Buklod 20231008000406.0 a grb 001 u| ta 111118s xx d | ||r ||||| || DENG eng Wang, Tao Collapse simulation of a four story steel moment frame by a distributed online hybrid test. pp. 955-974 The collapse of a one-bay, four story steel moment frame is simulated in this study by the proposed peer to peer (P2P) Internet online hybrid test system. The typical beam hinging mechanism, which is ensured by a strong column, weak beam design, is reproduced. The plastic hinges at the column bases are taken as the experimental portions, while the superstructure is analyzed numerically by a general purpose finite element program. The implicit plastic rotations of the two column bases are treated as boundary displacements. In order to account for the complex behavior of the column bases, the P2P system is modifed to use the secant stiffness during iterations, and the physical specimens are designed such that the plastic hinge behavior can be obtained. For this study, the three substructures are distributed to different locations. A large ground motion is repeatedly imposed until the column bases lose their capacity to sustain the gravity load. As a result, significant deterioration is observed at both column bases. The proposed P2P system is thus demonstrated to be able to accomodate multiple tested substructures involving unstable behavior. The results suggest that the P2P Internet online hybrid test system provides a reliable means of studying structures up to collapse. P2P Internet online hybrid test. Finite element method. Steel moment frame. Column base. Deterioration. Collapse. Earthquake engineering & structural dynamics. 37, 6 (2008). FO UPD DENG Article