In this study, the tuned liquid damper (TLD) device was optimized by harmony search (HS) and adaptive algorithms (AHS). Using algorithm, seismic excitations were directed at single ten-story structures, TLD parameters to minimize building movement. To improve design parameters, optimization process repeated adapting factors of algorithm. For purpose, both memory consideration ratio (HMCR) fret ...

Abstract: Since soil dynamic behaviour is nonlinear in nature therefore a nonlinear viscoelastic model for isotropic materials is proposed in this study. This model is a combination of inelasticity and nonlinear damping. In this model, the shear modulus is taken as a function of the excitation level. The viscosity is assumed to vary nonlinearly. The validity of this model is checked for low amp...

The possibility of employing internal wall as mass absorber in rectangular water storage tanks subjected to harmonic ground motion excitation is investigated in this paper. Internal walls are used in these tanks usually for service performance purposes, which could be used as mass absorber to control seismic demand on tank's exterior walls. Derivation of the response of the coupled system inclu...

In this paper the control algorithm for controlled civil structures subjected to earthquake excitation is thoroughly investigated. The objective of this work is the control of structures by means of the pole placement algorithm, in order to improve their response against earthquake actions. Successful application of the algorithm requires judicious placement of the closed-loop eigenvalues from ...

Elastic wave-based oil mobilization of residual in heterogeneous reservoirs is a viable, low-cost, and green technology method enhanced recovery (EOR). Applications for elastic (seismic) waves at the reservoir scale are currently preliminary stages investigation development. We employ two-layer numerical finite element (FEM) this research to investigate possibility effective propagation seismic...

Abstract. Double-skin façades (DSFs), widely used in buildings to provide specific thermal efficiency, acoustic isolation, and weather resistance properties, have been recently as passive control systems. The present study focuses on the stochastic analysis of a shear-type frame equipped with DSF subjected ground motion acceleration modelled zero-mean stationary Gaussian random process fully ch...