Finite Element Study into the effect of footwear temperature on the Forces transmitted to the foot during quasi- static compression loading

Shariatmadari, Mohammad; English, Russell; Rothwell, Glynn

doi:10.1088/1757-899x/10/1/012126

Cited by 12 publications

(16 citation statements)

References 11 publications

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“…FE analysis has also been utilised to explore the effects of environmental influences on the performance of the insole material. Shariatmadari et al [25] used a 2D coronal plane model of the heel to assess the pressure relieving performance of commonly used insole materials from 10–40°C. By modelling the known effects of temperature on material elasticity properties, the study showed that the changes in material performance within these temperatures had a considerable effect on the ability of these commonly prescribed insole materials to reduce peak plantar pressures, with performance being the worst at 10°C.…”

Section: Resultsmentioning

confidence: 99%

“…This may be supported by results from FE simulations showing that the locating pressure relieving plugs using the location of peak pressures produced greater reductions than those located based on the anatomical location of the metatarsal head alone [40] . The findings by Shariatmadari et al [25] that temperature can affect the pressure relieving performance of insole materials also raises questions about insole performance in different seasons/climates and whether this should be taken into account when prescribing the devices.…”

Section: Discussionmentioning

confidence: 99%

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What Has Finite Element Analysis Taught Us about Diabetic Foot Disease and Its Management? A Systematic Review

et al. 2014

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BackgroundOver the past two decades finite element (FE) analysis has become a popular tool for researchers seeking to simulate the biomechanics of the healthy and diabetic foot. The primary aims of these simulations have been to improve our understanding of the foot’s complicated mechanical loading in health and disease and to inform interventions designed to prevent plantar ulceration, a major complication of diabetes. This article provides a systematic review and summary of the findings from FE analysis-based computational simulations of the diabetic foot.MethodsA systematic literature search was carried out and 31 relevant articles were identified covering three primary themes: methodological aspects relevant to modelling the diabetic foot; investigations of the pathomechanics of the diabetic foot; and simulation-based design of interventions to reduce ulceration risk.ResultsMethodological studies illustrated appropriate use of FE analysis for simulation of foot mechanics, incorporating nonlinear tissue mechanics, contact and rigid body movements. FE studies of pathomechanics have provided estimates of internal soft tissue stresses, and suggest that such stresses may often be considerably larger than those measured at the plantar surface and are proportionally greater in the diabetic foot compared to controls. FE analysis allowed evaluation of insole performance and development of new insole designs, footwear and corrective surgery to effectively provide intervention strategies. The technique also presents the opportunity to simulate the effect of changes associated with the diabetic foot on non-mechanical factors such as blood supply to local tissues.DiscussionWhile significant advancement in diabetic foot research has been made possible by the use of FE analysis, translational utility of this powerful tool for routine clinical care at the patient level requires adoption of cost-effective (both in terms of labour and computation) and reliable approaches with clear clinical validity for decision making.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

What Has Finite Element Analysis Taught Us about Diabetic Foot Disease and Its Management? A Systematic Review

et al. 2014

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“…Shariatmadari et al [28] suggested FE modelling as a viable adjunct to heuristic methodologies, when addressing shape modification/optimization of footwear. In their study, a nonlinear synergetic response of midsole and insole was observed.…”

Section: Discussionmentioning

confidence: 99%

Gait-Specific Optimization of Composite Footwear Midsole Systems, Facilitated through Dynamic Finite Element Modelling

Drougkas¹,

Karatsis²,

Papagiannaki

et al. 2018

Applied Bionics and Biomechanics

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Objective During the last century, running shoes have been subject to drastic changes with incremental however improvements as to injury prevention. This may be, among others, due to the limited insight that experimental methodologies can provide on their 3D in situ response. The objective of this study was to demonstrate the effectiveness of finite element (FE) modelling techniques, in optimizing a midsole system as to the provided cushioning capacity. Methods A commercial running shoe was scanned by means of micro computed tomography and its gel-based midsole, reverse-engineered to a 200 μm accuracy. The resulting 3D model was subjected to biorealistic loading and boundary conditions, in terms of time-varying plantar pressure distribution and shoe-ground contact constraints. The mesh grid of the FE model was verified as to its conceptual soundness and validated against velocity-driven impact tests. Nonlinear material properties were assigned to all entities and the model subjected to a dynamic FE analysis. An optimization function (based on energy absorption criteria) was employed to determine the optimum gel volume and position, as to accommodate sequential cushioning in the rear-, mid-, and forefoot, of runner during stance phase. Results The in situ developing stress fields suggest that the shock dissipating properties of the midsole could be significantly improved. Altering the position of the gel pads and varying their volume led to different midsole responses that could be tuned more efficiently to the specific strike and pronation pattern. Conclusions The results suggest that midsole design can be significantly improved through biorealistic FE modelling, thus providing a new platform for the conceptual redesign and/or optimization of modern footwear.

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“…By mean of reverse engineering, a produced shoe can be used to investigate and suggest improvements of material allocation within the midsole [11]. Results taken from finite element simulations of insole and midsolelayers made from various foam materials as the case of sport shoes optimize the distribution of the elastic modulus in the midsole to improve operability [12] aiming to reduce the Ground Reaction Forces [13]. Moreover, these applications help in controllingsole properties by using lattice structures [14] and through the combination of mechanical meta-material structures to create personalized soles [15] and shoes by 3D printing [16].…”

Section: Introductionmentioning

confidence: 99%

Advanced technologies for shoe sole production

et al. 2020

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Advanced technologies for modelling and production are an important part in the whole process of product manufacturing. These advancements have changed the way of product development and play an important role in customization. In the footwear industry, as in any other industry, the use of these technologies is widely spread. Footwear comfort is one of the main selection criteria for purchase. Considering this fact, a case study of different steps for shoe designing according to individual foot shape will be presented. Taking into consideration the aesthetics of the sole and in a more sustainable view, through topological optimization reducing of material wastage for sole production will be presented. By means of the topological optimization in the shoe design process, sole optimization is realized. As a part of personalization, feet’s plantar pressure maps taken from 1 participant gave a better explanation of weight distribution of each foot. Following, sole personalization according the plantar pressure maps for each foot gives the possibility to obtain the best least material design according to the feet’s pressure while maintaining biomechanical performance.

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Finite Element Study into the effect of footwear temperature on the Forces transmitted to the foot during quasi- static compression loading

Cited by 12 publications

References 11 publications

What Has Finite Element Analysis Taught Us about Diabetic Foot Disease and Its Management? A Systematic Review

What Has Finite Element Analysis Taught Us about Diabetic Foot Disease and Its Management? A Systematic Review

Gait-Specific Optimization of Composite Footwear Midsole Systems, Facilitated through Dynamic Finite Element Modelling

Advanced technologies for shoe sole production

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