Complex Fluids in Energy Dissipating Systems

Abstract

Abstract:The development of engineered systems for energy dissipation (or absorption) during impacts or vibrations is an increasing need in our society, mainly for human protection applications, but also for ensuring the right performance of different sort of devices, facilities or installations. In the last decade, new energy dissipating composites based on the use of certain complex fluids have flourished, due to their non-linear relationship between stress and strain rate depending on the flow/field configuration. This manuscript intends to review the different approaches reported in the literature, analyses the fundamental physics behind them and assess their pros and cons from the perspective of their practical applications.

Morphological computation in haptic sensation and interaction: from nature to robotics

“…In addition to this, there other physical phenomena which may be of interest for future research. Shear-thickening [129] and shear-thinning [130] fluids respectively increase or decrease their viscosity in proportion to the rate of shear. As a result, a morphological computation element could be designed around one of these fluids in order to change its stiffness and damping in response to different mechanical stimuli.…”

Impact responses of an open‐cell natural rubber foam impregnated with shear thickening fluid

“…The STF, prepared by dispersing nanosilica into ethylene glycol, were applied in high performance fabrics such as Kevlar, aramid based Twaron, and ultra-high molecular weight polyethylene (UHMWPE) fabric. [4][5][6][7][8] Other particles were also been studied for STF preparation such as polystyrene ethyl acrylate (PSt-EA) particles in ethylene glycol (EG), carbon nanotubes and graphene nanoplatelets in polyethylene glycol (PEG200), and polymethylmethacrylate (PMMA) in glycerin-water mixture. [9][10][11] The STF/foam composites were also investigated in several works.…”

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

“…Examples of these applications are journal bearings (Bompos and Nikolakopoulos, 2011), hydraulic valves (Bullough et al, 2008; Nguyen et al, 2008), micro-pumps (Liang et al, 2018), smart clutches (Ellam et al, 2006; Zhang et al, 2019), rotary MR dampers (Deng et al, 2019; Wang et al, 2019), robotics (Hartzell et al, 2019; Hwang et al, 2019), energy harvesters (Deng and Dapino, 2015; O’Donoghue et al, 2016), rheometers (Allebrandi et al, 2020), human prosthesis (El Wahed and Wang, 2019), engines mounts (Do and Choi, 2015), and hybrid body armours (Son and Fahrenthold, 2012). So far, there have been fewer studies on the employment of MR fluids in these applications compared to research efforts on linear MR dampers (Galindo-Rosales, 2016).…”