Optimization of hydraulic damper parameters for high-rise buildings under seismic loading using a finite element model

Abstract

This paper presents a study on the optimal design of fluid viscous damper (FVD) parameters to enhance the seismic performance of high-rise buildings. The study involves the formulation of the dynamic equations of motion for a multi-degree-of-freedom (MDOF) system equipped with dampers, as well as the application of the finite element method (FEM) and the Newmark integration algorithm to solve the vibration problem. The research focuses on optimizing the damping coefficient C of the damper using the Levenberg–Marquardt algorithm implemented in Matlab, with the objective of controlling the roof displacement within the allowable limit of 1/500 of the building height. Numerical simulations conducted on 10-story and 15-story buildings demonstrate that the use and optimization of fluid viscous dampers significantly reduce roof displacement, base shear force, and structural acceleration responses under earthquake excitation.