Load transfer within the bolted joint of a laminate made from ultra-high molecular weight polyethylene fibres

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Load transfer within the bolted joint of a laminate made from ultra-high molecular weight polyethylene fibres. / Skovsgård, Simon Peter Hald; Jensen, Henrik Myhre; Fleck, Norman.

I: International Journal of Solids and Structures, Bind 185, 01.03.2020, s. 182-190.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Skovsgård, Simon Peter Hald ; Jensen, Henrik Myhre ; Fleck, Norman. / Load transfer within the bolted joint of a laminate made from ultra-high molecular weight polyethylene fibres. I: International Journal of Solids and Structures. 2020 ; Bind 185. s. 182-190.

Bibtex

@article{e74fb89a600848e494b9c1915750a953,
title = "Load transfer within the bolted joint of a laminate made from ultra-high molecular weight polyethylene fibres",
abstract = "The mechanism of load transfer within the bolted joint of a laminate sheet made from ultra-high molecular weight polyethylene (UHMWPE) plies is investigated both experimentally and by an analytical model. The nature of load transfer and the active failure mechanisms are obtained as a function of joint geometry and of the lateral clamping force on the faces of the laminate (by pre-tensioning of the bolt). A combination of X-ray tomography and optical microscopy reveal that the dominant failure mechanism in the clamped joint is shear failure involving splits of the 0o plies and sliding at the interface between the 0° and 90° plies. A simple analytical model is developed for this shear failure mechanism and, upon noting the competing failure mechanisms of bearing failure, bolt shear and of tensile failure of the 0° plies, a failure mechanism map is constructed in terms of the geometry of the bolted joint, for the case of no pre-tension of the bolt. The analytical model for shear failure suggests that the enhancement in joint strength with increased pre-tensioning of bolt is due to the fact that the shear strength of the UHMWPE increases with increasing hydrostatic pressure.",
keywords = "UHMWPE fibres, Joint failure, Failure map, Pressure dependent shear strength",
author = "Skovsg{\aa}rd, {Simon Peter Hald} and Jensen, {Henrik Myhre} and Norman Fleck",
year = "2020",
month = mar,
day = "1",
doi = "10.1016/j.ijsolstr.2019.08.014",
language = "English",
volume = "185",
pages = "182--190",
journal = "International Journal of Solids and Structures",
issn = "0020-7683",
publisher = "Pergamon Press",

}

RIS

TY - JOUR

T1 - Load transfer within the bolted joint of a laminate made from ultra-high molecular weight polyethylene fibres

AU - Skovsgård, Simon Peter Hald

AU - Jensen, Henrik Myhre

AU - Fleck, Norman

PY - 2020/3/1

Y1 - 2020/3/1

N2 - The mechanism of load transfer within the bolted joint of a laminate sheet made from ultra-high molecular weight polyethylene (UHMWPE) plies is investigated both experimentally and by an analytical model. The nature of load transfer and the active failure mechanisms are obtained as a function of joint geometry and of the lateral clamping force on the faces of the laminate (by pre-tensioning of the bolt). A combination of X-ray tomography and optical microscopy reveal that the dominant failure mechanism in the clamped joint is shear failure involving splits of the 0o plies and sliding at the interface between the 0° and 90° plies. A simple analytical model is developed for this shear failure mechanism and, upon noting the competing failure mechanisms of bearing failure, bolt shear and of tensile failure of the 0° plies, a failure mechanism map is constructed in terms of the geometry of the bolted joint, for the case of no pre-tension of the bolt. The analytical model for shear failure suggests that the enhancement in joint strength with increased pre-tensioning of bolt is due to the fact that the shear strength of the UHMWPE increases with increasing hydrostatic pressure.

AB - The mechanism of load transfer within the bolted joint of a laminate sheet made from ultra-high molecular weight polyethylene (UHMWPE) plies is investigated both experimentally and by an analytical model. The nature of load transfer and the active failure mechanisms are obtained as a function of joint geometry and of the lateral clamping force on the faces of the laminate (by pre-tensioning of the bolt). A combination of X-ray tomography and optical microscopy reveal that the dominant failure mechanism in the clamped joint is shear failure involving splits of the 0o plies and sliding at the interface between the 0° and 90° plies. A simple analytical model is developed for this shear failure mechanism and, upon noting the competing failure mechanisms of bearing failure, bolt shear and of tensile failure of the 0° plies, a failure mechanism map is constructed in terms of the geometry of the bolted joint, for the case of no pre-tension of the bolt. The analytical model for shear failure suggests that the enhancement in joint strength with increased pre-tensioning of bolt is due to the fact that the shear strength of the UHMWPE increases with increasing hydrostatic pressure.

KW - UHMWPE fibres

KW - Joint failure

KW - Failure map

KW - Pressure dependent shear strength

UR - http://www.scopus.com/inward/record.url?scp=85071402684&partnerID=8YFLogxK

U2 - 10.1016/j.ijsolstr.2019.08.014

DO - 10.1016/j.ijsolstr.2019.08.014

M3 - Journal article

VL - 185

SP - 182

EP - 190

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

SN - 0020-7683

ER -