Mathematical Model for Thin-walled Corrugated Tube under Axial Compression

In recent years new structures have been developed for sustainability as they are lighter, with less material usage while sustaining their mechanical properties to be utilised in the application. One of these structures is a corrugated structure mainly used in the packaging industry but recently has been recognised by many other applications as the structure is known for its capabilities against shock absorption. In this study, BS6655 was used to evaluate corrugated structure in a helmet while an impact occurs to its front. The dynamic responses of the corrugated helmet were compared with a solid helmet. The results showed that the corrugated helmet has a higher ability to absorb the shock and protect the head from injuries in such impact.

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Section: Introductionmentioning

confidence: 99%

“…Using honeycomb structure in helmet has been analysed by many articles [7][8][9]. The honeycomb structure is being still considered the most reliable layer structure for the design of helmets [8]. Honeycomb structures reduce the HCI value in both front and rare impact points compare to commercial helmets [9].…”

Section: Introductionmentioning

confidence: 99%

Design and Numerical Analysis of Corrugated Helmet Under Impact Test

Malapaka¹,

Yazdifar

Golsby

et al. 2021

BJSTR

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“…Many experimental, numerical and theoretical studies have been performed to determine the energy absorption (EA) capacity of tubular columns. [1][2][3][4][5][6][7][8][9] For example, Abramowicz and Jones 10 carried out a series of axial crushing tests on circular and square steel tubes loaded either statically or dynamically. Langseth and Hopperstad 11 experimentally investigated the collapse behaviours of square tubes with different wall thicknesses at different impact velocities under static and dynamic loads.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness investigation of bitubal columns reinforced with several inside ribs under axial and oblique impact loads

Pirmohammad

Nikkhah

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper deals with the crashworthiness capability of newly designed bitubal columns with different polygonal cross-sections (i.e. triangular, square, hexagonal, octagonal, decagonal and circular) reinforced with several inside ribs. A large number of finite element analyses were performed on these columns under axial and oblique impact loads using LS-DYNA to find the crashworthiness indicators. These columns were studied with five different size ratios (the ratios of the perimeter a of the inner tube to the perimeter b of the outer tube), namely a/b = 0, 0.25, 0.5, 0.75 and 1. A decision-making method, which in this case is the technique for ordering preferences by similarity to the ideal solution, was then employed to select the better columns which possessed a higher energy absorption and a lower peak force. The bitubal columns with size ratios a/b of 0.5, 0.25 and 0.75 were generally found to be the best cases. Furthermore, the multi-cell columns with the decagonal and octagonal cross-sectional shapes were selected as the best energy absorbers.

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“…During collision, plastic deformation is the only mechanism contributed to absorb impact energy and tremendous number of publications can be found elsewhere [1][2][3][4]. Eyvazian et al [1] investigated axial crushing behaviour of corrugated tubes made of aluminium tubes.…”

Section: Introductionmentioning

confidence: 99%

“…It is found the crushing behaviour is affected by the corrugated geometries since the introduction of design defect capable to control the collapse behaviour of the tubes. A mathematical aspect of corrugated tube under axial compression can be found in [2].…”

Section: Introductionmentioning

confidence: 99%

Oblique crushing performances of hybrid woven Kenaf fibre reinforced aluminium hollow cylinder

et al. 2017

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This paper presents crushing performances of hybrid woven kenaf fibre reinforced aluminium tubes under axial and oblique compression. According to open literature, lack number of works conducted to study the crushing responses when kenaf fibre in the form of woven is used to reinforce aluminium tubes. There are important parameters are used such as fibre orientations and oblique compression angles. Kenaf fibre in the form of woven is firstly wetted with polyester resin before it is wrapped around the tubes. After composite hardened, the hybrid tubes are quasi-statically compressed and force-displacement curves are recorded. Energy absorption performances are then determined and discussed in term of different fibre orientations and oblique angles. It is found that [r30 o ] fibre orientations capable to produce higher force-displacement responses and hybrid tubes are produced lower force ratio indicating the role of natural fibre in increasing the capability of energy absorptions.

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Mathematical Model for Thin-walled Corrugated Tube under Axial Compression

Cited by 6 publications

References 9 publications

Design and Numerical Analysis of Corrugated Helmet Under Impact Test

Design and Numerical Analysis of Corrugated Helmet Under Impact Test

Crashworthiness investigation of bitubal columns reinforced with several inside ribs under axial and oblique impact loads

Oblique crushing performances of hybrid woven Kenaf fibre reinforced aluminium hollow cylinder

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