| Title |
Simplified Seismic Analysis of Elastic Systems with Supplemental Damping Considering Plan Asymmetry |
| Authors |
Han Sang-Eul ; Choi Moon-Ho ; Kong Seok-Hwan |
| Keywords |
Asymmetric Plan ; Supplemental Damping ; Non-Classical Damping ; Modal Analysis |
| Abstract |
This study investigates the effectiveness of proposed modal analysis method using the pseudo-force to deal with supplemental damping in the seismic analysis of elastic systems. On this study, the one-way asymmetric systems are considered because these will undergo lateral and torsional motion simultaneously due to supplemental damping and stiffness eccentricities. For the purpose of this study, the analysis is performed with the consideration of large range of system parameters, such as asymmetric of system and distribution of supplemental damping. And, the CPU running times are compared to investigate the effect of additional procedure on proposed methods. Finally, these proposed methods are applied to a three-story one-way asymmetric building with supplemental damping on each floor. These analytical results are compared with those obtained by direct integration method and conventional approximate method, which neglects the off-diagonal terms of the transformed damping matrix. It is found that the proposed methods can significantly improve the accuracy of the analytical results compared to conventional approximate method on large range of system parameters although it need a little additional analysis time. |