https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1759&context=eispapers1

A review of modern advancements in micro drilling techniques

A semi-active suspension using a magnetorheological damper with nonlinear negative-stiffness component

Development and evaluation of a versatile semi-active suspension system for high-speed railway vehicles

Magnetorheological fluids involve multi-physics phenomena which are manifested by interactions between structural mechanics, electromagnetism and rheological fluid flow. In comparison with analytic...

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A review on multi-physics numerical modelling in different applications of magnetorheological fluids:

The productivity during the machining of thin-floor components is limited due to unstable vibrations, which lead to poor surface quality and part rejection at the last stage of the manufacturing process. In this article, a semi-active magnetorheological damper device is designed in order to suppress chatter conditions during the milling operations of thin-floor components. To validate the performance of the magnetorheological (MR) damper device, a 1 degree of freedom experimental setup was designed to mimic the machining of thin-floor components and then, the stability boundaries were computed using the Enhance Multistage Homotopy Perturbation Method (EMHPM) together with a novel cutting force model in which the bull-nose end mill is discretized in disks. It was found that the predicted EMHPM stability lobes of the cantilever beam closely follow experimental data. The end of the paper shows that the usage of the MR damper device modifies the stability boundaries with a productivity increase by a factor of at least 3.

Semi-Active Magnetorheological Damper Device for Chatter Mitigation during Milling of Thin-Floor Components

Principles, Characteristics and Applications of Magneto Rheological Fluid Damper in Flow and Shear Mode☆

Design and Manufacturing Aspects of Magneto-rheological Fluid (MRF) Clutch

Metal cutting processes involve interaction of the machining forces with the work piece. In this processes the vibrations are induced in machine tools which have adverse effect on tool life, surface integrity and occurrence of undesirable chatter phenomenon. In order to enhance the quality of surface of the work piece after machining and avoid chatter marks and breakage of tool, this paper gives a unique method to detect and suppress the chatter effect on the work piece finis. This method incorporates the features of Magneto-Rheological fluid which utilizes the input current as source to modify the magnetic field to enhance the variable stiffness and produce damping effect to control the end mill cutter vibration and suppress the chatter. The variables stiffness and damping can be maintained by the damper input current to attain desired magnetic field in the MR damper. In this work the chatter detection is observed by means of a remarkable Bingham number. The different machining parameters are considered in the experimental work and the results are compared with and without the magneto rheological damping effect and the results shows the enhancement of surface quality and reduced the chatter marks on the work piece by producing Magneto-Rheological damping to the end mill cutter during machining.

Experimental Investigation of Magneto Rheological Damping Effect on Surface Roughness of Work Piece during End Milling Process

Composites have been used extensively in applications such as pipes and pressure vessels. Therefore there is need for further studies on the physical and mechanical properties of these materials. In the present work composite laminates made of glass fiber and epoxy resin are tested to find the strength of the laminate and also its mechanical properties. By using FEA (Ansys 11.0) the optimum helix angle is determined for the composite material

N. Seetharamaiah

Papers

Principles, Characteristics and Applications of Magneto Rheological Fluid Damper in Flow and Shear Mode☆

Design and Manufacturing Aspects of Magneto-rheological Fluid (MRF) Clutch

Experimental Investigation of Magneto Rheological Damping Effect on Surface Roughness of Work Piece during End Milling Process

Characterization and Mechanical Behavior of Composite Material Using FEA

FEA based Modeling of Magneto Rheological Damper to Control Vibrations During Machining