Multi-objective optimization of converting process of auxetic foam using three different statistical methods

Najarian, Farhad; Alipour, R.; Rad, Mozafar Shokri; Nejad, Ali Farokhi; Razavykia, Abbas

doi:10.1016/j.measurement.2018.01.064

Cited by 37 publications

(27 citation statements)

References 54 publications

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“…Simulation results could therefore aid and inform the design of future prototypes-e.g., to reduce a structure's mass while maintaining the maximum load it can support. FEM has also been used to develop understanding of the effect of plastic deformation on auxetic behaviour [127,128] and generate specific material models to explore impact resistance of auxetic honeycomb structures [129]. A framework for modelling auxetic foam using the continuum approach at large strains has been developed with FEM [130][131][132] and could be extended to model composite structures made from auxetic materials.…”

Section: Modelling Auxetic Materials and Structuresmentioning

confidence: 99%

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Duncan

Shepherd

Moroney³

et al. 2018

Applied Sciences

239

151

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Following high profile, life changing long term mental illnesses and fatalities in sports such as skiing, cricket and American football-sports injuries feature regularly in national and international news. A mismatch between equipment certification tests, user expectations and infield falls and collisions is thought to affect risk perception, increasing the prevalence and severity of injuries. Auxetic foams, structures and textiles have been suggested for application to sporting goods, particularly protective equipment, due to their unique form-fitting deformation and curvature, high energy absorption and high indentation resistance. The purpose of this critical review is to communicate how auxetics could be useful to sports equipment (with a focus on injury prevention), and clearly lay out the steps required to realise their expected benefits. Initial overviews of auxetic materials and sporting protective equipment are followed by a description of common auxetic materials and structures, and how to produce them in foams, textiles and Additively Manufactured structures. Beneficial characteristics, limitations and commercial prospects are discussed, leading to a consideration of possible further work required to realise potential uses (such as in personal protective equipment and highly conformable garments).

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Section: Modelling Auxetic Materials and Structuresmentioning

confidence: 99%

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Duncan

Shepherd

Moroney³

et al. 2018

Applied Sciences

239

151

View full text Add to dashboard Cite

show abstract

“…Regarding the guidelines introduced by Montgomery, the influential parameters can be distinguished as controllable [33,41]. Based on conducted investigations, the most important parameters that affect the drilling process of basalt/epoxy composite laminate in order to reduce delamination and the thrust force are spindle speed (RPM), feed rate (mm/min) and tool diameter (mm).…”

Section: Design Of Experiments In the Absence Of Magnetic Fieldmentioning

confidence: 99%

Hole quality assessment in drilling process of basalt/epoxy composite laminate subjected to the magnetic field

Najarian

Alipour

Razavykia

et al. 2019

Mechanics & Industry

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Drilling is one of the most important machining processes which are currently carried out on fiber-reinforced composites. These composites possess a layered structure and different properties through their thickness. When drilling such structures, internal defects like delamination occur, caused by the drilling forces and their uneven distribution among the plies. The current study investigates the effect of magnetic field on drilling process of basalt/epoxy composite laminate in order to reduce delamination and the thrust force and improve some hole quality parameters i.e. roughness and cylindricity. A comparison is made between the responses for both normal drilling and drilling with applying a magnetic field. For this purpose, after finding the best combinations of normal drilling parameters, magnetic field is applied to the different configurations of solenoids on the setup of the drilling process. The results highlighted that using different magnet solenoids on the top and the bottom of drilling zone reduces the delamination and can obtain better roughness and cylindricity with lower damage.

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“…Their studies focused on the crash worthiness indicators when a structure is under axial loading. Moreover the effect of filler material to enhance material properties has been investigated [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Energy absorption assessment of conical composite structures subjected to quasi-static loading through optimization based method

Nia¹,

Nejad²,

Li³

et al. 2020

Mechanics & Industry

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The geometry of a composite frusta-conical structure with 20° apex angle was optimized using topology optimization method. The ATOM topology solver was used to perform optimization process. The structure was subjected to an axial compressive quasi-static loading where the criterion of optimization is the largest absorption of energy per unit volume. The optimization resulted in concave shell geometry with a volume reduction of 15%. To compare the effect of geometry on energy absorption capability, two types of GFRP specimen with different thickness were fabricated using filament winding and hand lay-up methods. The axial crushing test results were validated with numerical analysis using the commercial finite element software ABAQUS. The collapse mode and failure mechanism were investigated and identified. The presented methodology helps to find the better geometry instead of testing different geometries.

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Multi-objective optimization of converting process of auxetic foam using three different statistical methods

Cited by 37 publications

References 54 publications

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Hole quality assessment in drilling process of basalt/epoxy composite laminate subjected to the magnetic field

Energy absorption assessment of conical composite structures subjected to quasi-static loading through optimization based method

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