In the study, weight efficiency of Triple Friction Pendulum Bearing (TFP) Isolators is investigated on optimal planar steel frames. For this investigation, an optimization program based Artificial Bee Colony (ABC) algorithm have been developed for study. design frames, structure should satisfy strength, inter-story drift, top-story drift and geometric requirements that are implemented from LRFD...

Abstract This paper presents a study that determines the conditions of testing for determining bounding properties seismic isolators use in analysis and design test is meant to be replacement tests Items 2(a) 3 ASCE/SEI‐7. Then separately, adequacy maximum considered earthquake Item 4 The are determined by performing analyses with models account time‐variant computing resultant isolator displac...

objective: to investigate the friction of rabbit’s knee joint with designed pendulum friction tester to diagnose and evaluate different pathological and therapeutic conditions following haemarthrosis, osteoarthritis, and other joint disorders. materials and methods: friction coefficient of 10 adult male albino rabbit’s joint (5 right and 5 left knees) weighted 1.59 ± 0.27 kg, after designing a...

This study aims to investigate seismic behavior of lead-core rubber elastomeric bearing (LRB) and curved surface friction pendulum slider (FPS) base isolated models considering torsional irregularity for typical reinforced concrete buildings. Nonlinear structural members was considered in analysis models. Total 1408 different nonlinear time history analyses 3-dimensional 3, 5, 7 9-story were pe...

In this paper, the development of non-linear building isolation systems is overviewed. The study summarizes commonly used linear in two categories, which are base and inter-storey systems. Typical isolators including Lead-Rubber Bearings Friction Pendulum viscous damper Tuned Mass Damper reviewed. analysis design also reported. After that, introduced from aspects based on their dynamic characte...

Friction is present in all mechanical systems and causes a wide range of problems for control. The development of friction models and methods to account for friction in control has been an active research area for many years. A promising friction model that is capable of describing a wide array of observed friction phenomena is the LuGre model. This thesis deals with the application of friction...

Seismic isolation is one of the most effective seismic hazard mitigation techniques, which has been implemented in many structures. Friction pendulum isolators are popular devices to achieve energy dissipation and shear resistance that depends on radius instantaneous vertical force them. So, horizontal response this type coupled with axial load them, could change due acceleration during ground ...

Cylindrical liquid storage tanks are considered as vital structures in industrial complex whose nonlinear dynamic behavior is of crucial importance. Some of these structures around the world have demonstrated poor seismic behavior over the last decades. There are several methods and techniques for rehabilitation and reducing damages in these structures which among them passive control devices, ...

Base isolation techniques have emerged as the most effective seismic damage mitigation strategies. Several types of aseismic devices for base been invented, studied, and used. Out several systems, sliding systems are popular due to their operational simplicity ease manufacturing. This article discusses historical development passive such pure friction pendulum isolators with other surface geome...