Dynamic characteristics and control of magnetorheological/electrorheological sandwich structures: A state-of-the-art review

Abstract

During past four decades, applications of magnetorheological and electrorheological fluids in adaptive sandwich structures have been widely studied, primarily for the purpose of vibration control. The rapid response time of controllable magnetorheological/electrorheological fluids to an applied magnetic/electric field and reversible variations in their stiffness and damping properties have been the key motivations for adaptive structures applications. This article presents a comprehensive review of the reported studies on applications of magnetorheological/electrorheological fluids for realizing active and semi-active vibration suppression in sandwich structures. The review focuses on methods of characterizing the magnetorheological/electrorheological fluids in the pre-yield region, magnetic/electric field-dependent phenomenological models describing the storage and loss moduli of fluids, experimental and analytical methods developed for vibration analysis of sandwich structures with magnetorheological/electrorheological fluid treatments, analysis of structures with partial magnetorheological/electrorheological fluid treatments and optimal treatment locations, and developments in control strategies for vibration suppression of magnetorheological/electrorheological sandwich structures. The studies on dynamic responses of fully and partially treated magnetorheological/electrorheological-based sandwich beams, plates, shells, and panels are also discussed, including the mathematical modeling methods and associated assumptions, methods of solutions, and experimental methods.

Preparation of Magnetorheological fluids: A Research

“…Many of they that use magnetor-fluids really are a fresh creation of brakes, clutches and dampers. Magnetorheological dampers as shock-absorbers would be definitely the apparatus with the type [44]. Alternators, electrical power steering pumps, artificial joints, motor mounts, Handle valves propagation, compound software yet many others are several of those illustrations [11,46].…”

“…As they can employ damping powers into the 16, dampers are manufactured and also are. A challenge does occur from the device, the damper has the capability to function like a system using parameters predicated on criteria of this fluid at the lack of the magnetic field [44]. MR dampers have software prosthesis get a handle on, from management methods, washing machine harm mitigation in engineer-centric and control of vibrations in bridges [inch].Valves: whenever that the liquid flows throughout the uterus, a magnetic field is put on the induces and also liquid viscosity of the liquid to grow.…”

Complex Fluids in Energy Dissipating Systems

“…The reader can find a comprehensive review on different fabrication techniques, experimental methods, mathematical modeling, and methods of solution in the work of Eshaghi et al [100]. Nevertheless, to the best knowledge of the author, there is a lack of studies providing a quantitative comparison between the damping performance of active sandwich structures using ERFs and MRFs and those more classical devices using a piezoelectric control.…”

Dynamic Behaviour Adaptation of Lightweight Structures by Compressible Constrained Layer Damping with Embedded Polymeric Foams and Nonwovens

“…• special sandwich panel cores, for example, in form of truss structures combined with intermediate layers of damping materials [5] or filled with granular materials [6], including cores with voids of optimised geometries [7], • locally acting dampers such as compact acoustic black holes [8,9], structurally integrated resonant metamaterials [10] and joints with viscoelastic damping [11], • active magneto-/electro-or photorheological layers with the damping and stiffness controlled by magnetic, electric field or light, respectively [12][13][14][15][16], • extended concepts of shunted piezoelectric actuator systems [17][18][19][20], • distributed active damping systems that use numerous vibration sensors and actuators attached to complex shaped structures, driven by real-time controllers [21,22].…”