Article
Engineering, Civil
Huimin Mao, Xueyuan Yan, Xiaoying Wei, Xuhong Liu
Summary: This study investigated the application of displacement-amplified torsional damper (DATD) in frame structures through finite element numerical simulation and theoretical analysis. The results showed that the structure equipped with DATD could significantly reduce the displacement and internal force at the joints, demonstrating obvious energy dissipating and vibration control effects.
Article
Chemistry, Analytical
Szymon Ogonowski, Piotr Krauze
Summary: This article presents a method of vibrating screen trajectory control using MR dampers. The dynamic screen model is derived from experimental data and the effectiveness of the proposed control algorithm is validated. The method allows for close to linear trajectories with a single exciter and semi-active control.
Article
Acoustics
Qian Zhao, Jing Yuan, Huiming Jiang, Hongliang Yao, Bangchun Wen
Summary: This study presents a novel nonlinear damper using shear thickening fluid (STF) for vibration control in rotor systems, demonstrating significantly improved damping effects compared to traditional linear dampers. The theoretical and experimental research on STF dampers under different conditions shows their potential for effectively suppressing unbalance vibration and absorbing resonance energy, highlighting the advantages of using STF dampers in adaptive or semi-active vibration control applications for rotating machinery.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Automation & Control Systems
Gianluca Savaia, Giulio Panzani, Matteo Corno, Jacopo Cecconi, Sergio M. Savaresi
Summary: This study presents a semi-active MR model based on a Hammerstein-Wiener scheme, which can be used for force estimation and suspension controller design, and is validated through experiments. Each component serves to characterize specific features of the MR damper, with the Wiener part of the model shown to be essential for modeling the magnetization dynamics of the magnetorheological fluid.
CONTROL ENGINEERING PRACTICE
(2021)
Article
Engineering, Civil
H. W. Huang, L. M. Sun
Summary: This paper investigates the efficiency and effectiveness of the semi-active control system for cable-MR damper system, and verifies the superiority of the proposed system through numerical studies.
Article
Acoustics
Min Jiang, Xiaoting Rui, Wei Zhu, Fufeng Yang, Hongtao Zhu, Rilang Jiang
Summary: The study established a Bouc-Wen optimum model with sensitive parameters to improve efficiency and accuracy of parameter identification. Through sensitivity analysis, optimization, and model identification, it accurately simulates the dynamic characteristics of magnetorheological dampers.
JOURNAL OF VIBRATION AND CONTROL
(2021)
Article
Acoustics
Rosmazi Rosli, Zamri Mohamed
Summary: This article introduces a new modified cuckoo search algorithm for optimizing the Bouc-Wen Model in magnetorheological damper application. The algorithm was tested with standard benchmark functions and engineering optimization applications, demonstrating good performance. Comparisons with other optimization algorithms showed that the modified cuckoo search algorithm had the lowest root mean square error and fastest convergence rate.
JOURNAL OF VIBRATION AND CONTROL
(2021)
Article
Chemistry, Analytical
Piotr Krauze
Summary: This paper presents a method for identifying control-related signal paths in a semi-active suspension system with MR dampers. Experimental tests were conducted on an all-terrain vehicle to evaluate the performance of the identification method. The identified models can be used for the synthesis and implementation of adaptive suspension control algorithms.
Article
Engineering, Civil
Ali Bagherkhani, Mohtasham Mohebbi
Summary: This paper optimally designs magneto-rheological (MR) dampers for different control objectives by considering different distributions for the dampers within structure stories. The performance of the MR dampers is highly dependent on the control algorithms, objective functions, and dampers' distribution. The proposed optimization method improves the efficiency of MR dampers under different objective functions and is evaluated under both near-fault and far-fault earthquakes.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF CIVIL ENGINEERING
(2022)
Article
Engineering, Civil
Arman Tatar, Alexander M. Baker, Daniel M. Dowden
Summary: In recent years, there has been a growing interest in developing friction dampers with inclined friction interfaces and re-centering mechanisms. Numerical modeling of these dampers is not straightforward and requires unique material models or complex element configurations. This technical note provides a generalized numerical model implemented in the OpenSees framework for the modeling of seismically resilient friction dampers. The proposed model eliminates the need for creating new material models and shows good agreement with validation examples.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Xiaojun Fang, Kaiming Bi, Hong Hao, Yun Zhou, Zhangyan Chen, Yongsheng Cao
Summary: This paper introduces a novel lead-viscoelastic coupling beam damper (LVCBD), which has frequency independence, fatigue resistance, and stable energy dissipation. Numerical studies are conducted to investigate the effects of lead rod number and lead rod diameter on the hysteretic behaviors of the LVCBD. Theoretical formulas are derived, and a genetic algorithm is used to develop a hysteretic model to depict the behavior of the LVCBD. The properly designed LVCBD with four lead rods exhibits a favorable shear-bearing capacity with uniform stress distribution.
Article
Engineering, Civil
Quoc-Duy Bui, Xian-Xu Bai, Quoc Hung Nguyen
Summary: A novel parametric dynamic model, the QSMF model, is proposed based on quasi-static model and Magic Formula hysteresis multiplier to accurately predict and explain the hysteresis behavior of magnetorheological dampers. The model combines physical nature with practical nonlinear dynamic responses, providing flexibility for various design and modeling applications. It offers advantages like no differential equations and independent identification of parameters through experiments.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Jagajyoti Panda, Sanjukta Chakraborty, Samit Ray-Chaudhuri
Summary: This study introduces a novel digital control algorithm with state estimator technique for semi-active control of structures with magneto-rheological (MR) damper. The proposed strategy improves traditional control design by optimizing the observer technique through Kalman filter to estimate system states, effectively reducing structural responses, optimizing control forces, and enhancing system stability.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Article
Instruments & Instrumentation
Pedro Urda, Javier Perez, Enrique Carabias, Juan A. Cabrera, Juan J. Castillo
Summary: This work demonstrates the feasibility of using a shear-thickening fluid as the working fluid in a motorcycle steering damper. A prototype of the damper was designed and tested under various conditions. Unlike conventional models, this new damper combines simple rod geometries with different concentrations of shear-thickening fluid to achieve similar performance to high-performance racing dampers.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Mechanical
Muzio M. Gola
Summary: This paper presents a general geometric theory for the in-plane motion of underplatform dampers as a function of blade neck deflection and the resulting platform kinematics. It introduces the concept of equivalent virtual parallel geometry and develops equations for both In-Phase and Out-of-Phase blade vibrations. The paper also proposes a piecewise linear algorithm to pre-compute a cycle and introduces the concept of force Base-Cycle and moment Base-Cycle for the damper-platform system.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
