Abstract—In this paper, a one-dimensional (1d) Parallel ElastoPlastic Model (PEPM), able to simulate the uniaxial dynamic behavior of seismic isolators having a continuously decreasing tangent stiffness with increasing displacement, is presented. The parallel modeling concept is applied to discretize the continuously decreasing tangent stiffness function, thus allowing to simulate the dynamic b...

Magnetorheological (MR) dampers have received special attention as semi-active devices for mitigation of structural vibrations. Because of the inherent nonlinearity of these devices, it is difficult to obtain a reasonable mathematical inverse model. This paper is concerned with two related concepts. On one hand, it presents a new inverse model of MR dampers based on the normalized Bouc–Wen mode...

This study presents a precision stage driven by a piezoelectric actuator and equipped with a displacement magnification mechanism for the purpose of easy displacement measurement. The displacement magnification mechanism consists of flexible hinges and lever mechanisms. The developed stage is able to provide accurate measurement by virtue of the displacement magnification mechanism, but it is e...

Abstract The work describes experiments and models related to auxetic (negative Poisson’s ratio) foams subjected low-frequency variable amplitude 3-point bending loading. A custom vibration test rig is designed used perform the dynamic of PU foam beams within range (1–20 Hz) 5 different displacement amplitudes. tested in this are manufactured using a simplified relatively low-cost uniaxially th...

This research paper represents the analysis and simulation of semi-active suspension using non-linear modeling Magneto-Rheological (MR) with consideration hysteresis behavior for a quarter car model. The is based on assumption that each wheel experiences same disturbance excitation. Hysteresis analyzed Bingham, Dahl's, Bouc-Wen models. focuses passive, Dahl, models five road profiles. desired d...

Abstract This paper focuses on the optimum design of e-CLT technology. The technology consists in adding cross laminated timber (CLT) walls to an existing reinforced concrete (RC) infilled frame via asymmetric friction connection (AFC). authors carried out quasi-static and nonlinear dynamic analyses. RC is modeled OpenSees by fiber-section-based elements with force-based formulation. contributi...

In recent years, there has been a growing recognition that the rocking motion of structures, especially cylindrical ones, should be evaluated with three-dimensional (3D) models. However, dissipation mechanisms in 3D models are complex and have yet to well established. This paper presents an analytical study on inherent mechanism based rolling friction model external energy dissipators (EDs) for...

In this paper, a moving-average method of smoothing noise based on complex exponential decomposition is applied to eliminate non-stationary signal and non-linear produced by Bouc–Wen model, which are added white Gaussian simulate the in measured signal. The uses sliding window cutting entire and/or into small segments considers that stable linear. decomposed series components via decomposition,...

Hysteresis is a nonlinear phenomenon present in many structures, such as those assembled by bolted joints. Despite large number of recent findings related to identification techniques for these systems, the problem still challenging and open contributions. To fill gap concerning proposition algorithms based on closed-form solutions, this work introduces use harmonic balance method identify stoc...