In this paper, seismic behavior of the existing buildings equipped by friction dampers is studied. Seismic performance of6-story, 9-story and 12-story steel buildings with damper and without damper were studied. The finite element modeling technique (SAP2000 Software) is used for analysis. Time History analyzing was done to achieve this purpose. For nonlinear dynamic analysis, the responses of ...

Due to lack of theory of elasticity, estimation of ultimate torsional strength of reinforcement concrete beams is a difficult task. Therefore, the finite element methods could be applied for determination of strength of concrete beams. Furthermore, for complicated, highly nonlinear and ambiguous status, artificial neural networks are appropriate tools for prediction of behavior of such states. ...

This paper aims at investigating the nonlinear behavior of a system which is consisting of two free-free beams which are connected by a nonlinear joint. The nonlinear system is modelled as an in-extensional beam with Timoshenko beam theory. In addition, large amplitude vibration assumption is taken into account in order to obtain exact results. The nonlinear assumption in the system necessities...

Nonlinear device behavior is one of the concerns in telecommunications because of the possible information interference and the reduction in effective bandwidth. Measurement systems and black box modeling techniques to characterize and simulate these nonlinear devices would be a valuable tool. This paper explains briefly a prototype of a measurement system for nonlinear RF and microwave devices...

Nonlinear device behavior is one of the concerns in telecommunications because of the possible information interference and the reduction in effective bandwidth. Measurement systems and black box modeling techniques to characterize and simulate these nonlinear devices would be a valuable tool. This paper explains briefly a prototype of a measurement system for nonlinear RF and microwave devices...

the aim of this work is to describe the qualitative behavior of the solution set of a givensystem of fractional differential equations and limiting behavior of the dynamical system or flow defined by the system of fractional differential equations. in order to achieve this goal, it is first necessary to develop the local theory for fractional nonlinear systems. this is done by the extension of ...

Carbon nanotubes (CNTs) exhibit a unique buckling behavior due to their slender tubular geometry and thin-walled circular cross section. This study aims analyze effect of nonlinear cross-sectional deformation on CNTs. To accomplish this, CNTs are modeled as beam structures, the analysis is conducted using Variational Asymptotic Method (VAM) geometrically exact theory, well finite element (FEA)....

This paper describes a technique for modeling nonlinear systems using multiple piecewise linear equations. The technique provides a means for linearizing the nonlinear system in such a way as to not limit the large signal behavior of the target system. The nonlinearity in the target system must be able to be represented as a piecewise linear function. A simple third order nonlinear system is us...