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Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis

The use of defense hole system allows the flow of the stresses to be redistributed by introducing auxiliary holes in the low stress area near the main hole. However, the question remains on the optimal configuration of the defense hole system for effective stress mitigation at the bolt-hole region a...

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Main Authors: Othman, A.R., Jadee, K.J., Ismadi, M.-Z.
Format: Article
Published: SAGE Publications Ltd 2017
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032917693&doi=10.1177%2f0021998317692396&partnerID=40&md5=d450739452863d3cb05f73f04b042fcc
http://eprints.utp.edu.my/19295/
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spelling my.utp.eprints.192952018-05-03T02:10:13Z Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis Othman, A.R. Jadee, K.J. Ismadi, M.-Z. The use of defense hole system allows the flow of the stresses to be redistributed by introducing auxiliary holes in the low stress area near the main hole. However, the question remains on the optimal configuration of the defense hole system for effective stress mitigation at the bolt-hole region and, hence, increasing the bearing capacity of particular composite bolted joints. This study presents the influence of defense hole system geometrical design on the stress reduction in a single-bolt, double-lap composite bolted joint. The nonlinear material behavior of the joint was simulated using ANSYS through a progressive failure model, considering the circumferential and radial stresses at bearing, shear-out, and net tension regions of the bolt-hole. It was found that the stress has been reduced between 2.3 and 6.1 for the narrow laminates over a range of E/D ratios (1–5) with the benefits of the defense hole was clearly marked at DS = 2D and DHD = 0.75D. In contrast, for those of wider laminates, the stress reduction ranged from 1.9 to remarkably 18.6. © 2017, © The Author(s) 2017. SAGE Publications Ltd 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032917693&doi=10.1177%2f0021998317692396&partnerID=40&md5=d450739452863d3cb05f73f04b042fcc Othman, A.R. and Jadee, K.J. and Ismadi, M.-Z. (2017) Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis. Journal of Composite Materials, 51 (26). pp. 3685-3699. http://eprints.utp.edu.my/19295/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The use of defense hole system allows the flow of the stresses to be redistributed by introducing auxiliary holes in the low stress area near the main hole. However, the question remains on the optimal configuration of the defense hole system for effective stress mitigation at the bolt-hole region and, hence, increasing the bearing capacity of particular composite bolted joints. This study presents the influence of defense hole system geometrical design on the stress reduction in a single-bolt, double-lap composite bolted joint. The nonlinear material behavior of the joint was simulated using ANSYS through a progressive failure model, considering the circumferential and radial stresses at bearing, shear-out, and net tension regions of the bolt-hole. It was found that the stress has been reduced between 2.3 and 6.1 for the narrow laminates over a range of E/D ratios (1–5) with the benefits of the defense hole was clearly marked at DS = 2D and DHD = 0.75D. In contrast, for those of wider laminates, the stress reduction ranged from 1.9 to remarkably 18.6. © 2017, © The Author(s) 2017.
format Article
author Othman, A.R.
Jadee, K.J.
Ismadi, M.-Z.
spellingShingle Othman, A.R.
Jadee, K.J.
Ismadi, M.-Z.
Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis
author_facet Othman, A.R.
Jadee, K.J.
Ismadi, M.-Z.
author_sort Othman, A.R.
title Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis
title_short Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis
title_full Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis
title_fullStr Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis
title_full_unstemmed Mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, Part 1: Numerical analysis
title_sort mitigating stress concentration through defense hole system for improvement in bearing strength of composite bolted joint, part 1: numerical analysis
publisher SAGE Publications Ltd
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032917693&doi=10.1177%2f0021998317692396&partnerID=40&md5=d450739452863d3cb05f73f04b042fcc
http://eprints.utp.edu.my/19295/
_version_ 1738656049863327744
score 13.211869

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