A Microscopic Finite Element Model of Shoe–Floor Hysteresis and Adhesion Friction

Moghaddam, Seyed Reza M.; Redfern, Mark S.; Beschorner, Kurt E.

doi:10.1007/s11249-015-0570-x

Cited by 19 publications

(8 citation statements)

References 46 publications

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“…Since the shoes included here contained treads, the predominant lubrication regime was likely boundary lubrication with minimal hydrodynamic pressures (Hemler & Beschorner, 2017; Singh & Beschorner, 2014). The two primary friction mechanisms in boundary lubrication are adhesion and hysteresis (W.-R. Chang et al, 2001; S. R. M. Moghaddam, Redfern, & Beschorner, 2015; Strobel, Menezes, Lovell, & Beschorner, 2012).…”

Section: Discussionmentioning

confidence: 99%

Generalizability of Footwear Traction Performance across Flooring and Contaminant Conditions

Chanda

Jones

Beschorner

2018

IISE Transactions on Occupational Ergonomics and Human Factors

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Background: To prevent slip and fall events at the workplace, mechanical slip testing is conducted on shoes. Such experiments may involve redundant testing across floorings and contaminant conditions, causing wasted time and effort. Purpose: Quantify the correlations between shoe traction across different contaminant-flooring conditions to reduce redundant slip testing efforts. Methods: The available coefficient-of-friction (ACOF) was quantified for 17 shoes across five floorings and three contaminant conditions. Redundant testing conditions were identified when the shoe ACOF values for one floor-contaminant condition were highly correlated with a second floorcontaminant condition. Results: High correlations were observed among quarry floorings across different contaminants and among vinyl (composite tile) floorings with the same contaminant. However, vinyl floorings exhibited low correlations with quarry floorings. Low correlations were also observed across contaminants within vinyl tiles. Conclusions: This study was able to determine the generalizability of traction performance of shoes across vinyl and quarry floorings. This information is anticipated to reduce redundant traction testing of shoes across vinyl and quarry floorings.

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Section: Discussionmentioning

confidence: 99%

Generalizability of Footwear Traction Performance across Flooring and Contaminant Conditions

Chanda

Jones

Beschorner

2018

IISE Transactions on Occupational Ergonomics and Human Factors

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“…Their prediction of the ACOF had good agreement with experimental measurements. Recently, a viscoelastic friction model under dry condition and steady state sliding was developed (Moghaddam, Redfern, and Beschorner 2015). However, one of the critical issues involved with friction modelling for a slip event is that the viscoelastic model should be combined with other friction mechanisms (e.g.…”

Section: Tribologymentioning

confidence: 99%

State of science: occupational slips, trips and falls on the same level

et al. 2016

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Occupational slips, trips and falls on the same level (STFL) result in substantial injuries worldwide. This paper summarises the state of science regarding STFL, outlining relevant aspects of epidemiology, biomechanics, psychophysics, tribology, organisational influences and injury prevention. This review reaffirms that STFL remain a major cause of workplace injury and STFL prevention is a complex problem, requiring multi-disciplinary, multi-faceted approaches. Despite progress in recent decades in understanding the mechanisms involved in STFL, especially slipping, research leading to evidence-based prevention practices remains insufficient, given the problem scale. It is concluded that there is a pressing need to develop better fall prevention strategies using systems approaches conceptualising and addressing the factors involved in STFL, with considerations of the full range of factors and their interactions. There is also an urgent need for field trials of various fall prevention strategies to assess the effectiveness of different intervention components and their interactions. Practitioner Summary: Work-related slipping, tripping and falls on the same level are a major source of occupational injury. The causes are broadly understood, although more attention is needed from a systems perspective. Research has shown preventative action to be effective, but further studies are required to understand which aspects are most beneficial.

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“…Velocity boundary conditions were set to move the outsole relative to the floor. The contact pressure was controlled by the vertical displacement of the nodes on the top of the outsole [12]. This downward movement continued until an average normal force of 400N was achieved.…”

Section: Finite Element Analysismentioning

confidence: 99%

Feasibility of application of finite element method in shoe slip resistance test

Huang¹,

Hu²,

Xu³

et al. 2018

LFJ

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Finite element analysis (FEA) has been widely used in engineering and construction in simulating forces and interactions and its application in footwear have become quite ripe by being researched for over 30 years. The aim of this study was to investigate the slip resistance of the outsole to learn (1) the feasibility of FEA in the test of outsole slip resistance (2) frictional interactions between outsole and contact surface by experiment test and finite element analysis. A static friction tester was used for static slip resistance test and a SATRA STM 603 slip resistance tester was used for dynamic slip resistance test. Outcome showed that value of SCoF was a little bit higher than that of DCoF both in ET and FEA, and value of coefficients obtained in ET was higher. With the increase of COF value, the displacement of outsole decreased while stress of the outsole increased. In conclusion, FEA application is feasible in footwear resistance testing. Stability of the outsole with superior slip resistance is good in both longitudinal and transverse direction. During walking, it has a strong resistance to the slipping tendency to prevent tumble and sprain. KEY WORDS: Finite element model, Coefficient of friction, Slip resistance, Outsole FEZABILITATEA APLICĂRII METODEI ELEMENTELOR FINITE LA TESTAREA REZISTENŢEI LA ALUNECARE A ÎNCĂLŢĂMINTEIREZUMAT. Analiza elementelor finite (FEA) a fost utilizată pe scară largă în domeniul ingineriei şi construcţiilor pentru simularea forţelor şi a interacţiunilor, iar aplicarea acesteia în domeniul încălţămintei are o istorie îndelungată, fiind cercetată de peste 30 de ani. Scopul acestui studiu a fost de a investiga rezistenţa la alunecare a tălpii exterioare pentru a determina: (1) fezabilitatea FEA la încercarea de rezistenţă la alunecare a tălpii exterioare; (2) interacţiunile de frecare dintre talpa exterioară şi suprafaţa de contact prin testarea experimentală şi analiza elementelor finite. S-a folosit un aparat de testare a fricţiunii statice pentru testul de rezistenţă la alunecare statică şi un aparat de testare a rezistenţei la alunecare SATRA STM 603 pentru testul de rezistenţă la alunecare dinamică. Rezultatul a arătat că valoarea coeficientului de frecare în statică (SCoF) a fost puţin mai mare decât cea a coeficientului de frecare în dinamică (DCoF) atât în cazul testării experimentale, cât şi FEA, iar valoarea coeficienţilor obţinuţi în cazul testării experimentale a fost mai mare. Odată cu creşterea valorii COF, deplasarea tălpii a scăzut în timp ce presiunea asupra tălpii a crescut. În concluzie, aplicarea FEA este fezabilă în testarea rezistenţei la încălţăminte. Stabilitatea tălpii cu rezistenţă superioară la alunecare este bună atât în direcţia longitudinală, cât şi în cea transversală. În timpul mersului, talpa are o rezistenţă puternică la tendinţa de alunecare pentru a preveni căderea şi entorsa. CUVINTE CHEIE: model cu elemente finite, coeficient de frecare, rezistenţă la alunecare, talpă exterioară LA FAISABILITÉ D'APPLICATION DE LA MÉTHODE DES ÉLÉMENTS FINI...

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A Microscopic Finite Element Model of Shoe–Floor Hysteresis and Adhesion Friction

Cited by 19 publications

References 46 publications

Generalizability of Footwear Traction Performance across Flooring and Contaminant Conditions

Generalizability of Footwear Traction Performance across Flooring and Contaminant Conditions

State of science: occupational slips, trips and falls on the same level

Feasibility of application of finite element method in shoe slip resistance test

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