A tactile display is a programmable device whose controlled surface is intended to be investigated by human touch, as a finger is dragged over it. It has a great number of potential applications in the field of virtual reality and elsewhere. In this research, a prototype tactile display incorporating magnetorheological (MR) fluid has been constructed and investigated. Surface force responses of...

In this study, the stability and rheological properties of a suspension of carbonyl iron microparticles (CIMs) in silicone oil were investigated within a temperature range of 10 to 85 °C. The effect of adding two hydrophobic (stearic and palmitic) acids on the stability and magnetorheological effect of a suspension of CIMs in silicone oil was studied. According to the results, for preparing a s...

A magnetorheological fluid with good properties (yield stress and reversibility), containing high magnetization FeCo nanoparticles as magnetic fillers is presented.

In this paper, the lord magnetic field of MRF and its circuit design are mainly expounded, according to the loading ways of magnetic field and the magnetic circuit design plans of magneto-rheological fluid devices at present, the general form and characteristics are summarized. In addition, a kind of magneto-rheological fluid dynamometer is proposed in this paper, in terms of its magnetic circu...

The paper deals with coupled electromagnetic, hydrodynamic, thermal and mechanical motion phenomena in magnetorheological fluid transducers. The common structures of those devices are presented and discussed. The governing equations of coupled phenomena are presented. The numerical implementation of the mathematical model is based on the finite element method and a step-by-step algorithm. Selec...

This paper analyzed the working principle of the tester for yield stress of magnetorheological fluid based on the pulling test , combined with the Ohm's law of magnetic circuit and Ampere circuital theorem, calculated the magnetic circuit of the tester,using finite element software to simulate and analyze the magnetic circuit.

A two-fluid continuum model is developed to describe mass transport in electro- and magnetorheological suspensions. The particle flux is related to the field-induced stresses. Solutions of the resulting mass balance show column formation in the absence of flow, and stripe formation when a suspension is subjected simultaneously to an applied electric field and shear flow.

The demonstration involves a new haptic interface based on a wide-bandwidth electromagnetic valve and a pair of chambers filled with a magnetorheological fluid. It is intended to reproduce, with highfidelity, properties of complex materials that are experienced through pressing and squeezing actions, at the detriment of shape.

This paper presents the development of a magnetorheological (MR) fluid-based variable stiffness and damping isolator for vibration suppressions. The MR fluid isolator used a sole MR control unit to achieve the variable stiffness and damping in stepless and relative large scope. A mathematical model of the isolator was derived, and a prototype of the MR fluid isolator was fabricated and its dyna...