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Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass

Reinforced concrete (RC) slabs during their service life experience falling mass impacts which are significantly different from quasi-static loading on account of short-term load transference and higher strain rate. Slab being a thin flexural member is prone to short-term dynamic loadings susceptibl...

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Main Authors: Anas S.M., Al-Dala'ien R.N., Alam M., Akram S.
Other Authors: 57219929545
Format: Conference paper
Published: EDP Sciences 2025
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spelling my.uniten.dspace-367172025-03-03T15:44:08Z Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass Anas S.M. Al-Dala'ien R.N. Alam M. Akram S. 57219929545 57219563631 57213805388 58657980400 Reinforced concrete (RC) slabs during their service life experience falling mass impacts which are significantly different from quasi-static loading on account of short-term load transference and higher strain rate. Slab being a thin flexural member is prone to short-term dynamic loadings susceptible to irreparable damage or even collapse. Considerable research has been done with round impacting mass, however, the impacting mass needs not necessarily be round and may have a different geometry such as a rolling boulder or fragmented rock mass. To simulate the practical impacting geometries of the falling mass, eight different variations of the geometries varying from flat of 300mm diameter followed by 40mm flat with tapering from 90 to 0 in increments of 15 keeping the material characteristics and drop height of the falling mass constant across all the eight cases, have been considered herein to investigate the influence of impactor's taper angle on the anti-impact response of the validated square slab in Abaqus Explicit package program. A comparison of several response parameters including displacement, damage, stress distribution, and plastic dissipation energy has been done with the validated model, and the geometries of the impactor causing the maximum and minimum damages are identified. A key finding from this study is that all considered impacting geometries lead to bond failure in the lower layer of the re-bars, however, the impactors having the geometry with taper angles below 45 possess the capacity to induce bond failure in the re-bars of the upper layer too, beyond the impacted region. ? 2024 EDP Sciences. All rights reserved. Final 2025-03-03T07:44:08Z 2025-03-03T07:44:08Z 2024 Conference paper 10.1051/e3sconf/202449702021 2-s2.0-85188301454 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85188301454&doi=10.1051%2fe3sconf%2f202449702021&partnerID=40&md5=4bccdc78140314b8ea3aaf0e2dd5ac62 https://irepository.uniten.edu.my/handle/123456789/36717 497 2021 All Open Access; Gold Open Access; Green Open Access EDP Sciences Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Reinforced concrete (RC) slabs during their service life experience falling mass impacts which are significantly different from quasi-static loading on account of short-term load transference and higher strain rate. Slab being a thin flexural member is prone to short-term dynamic loadings susceptible to irreparable damage or even collapse. Considerable research has been done with round impacting mass, however, the impacting mass needs not necessarily be round and may have a different geometry such as a rolling boulder or fragmented rock mass. To simulate the practical impacting geometries of the falling mass, eight different variations of the geometries varying from flat of 300mm diameter followed by 40mm flat with tapering from 90 to 0 in increments of 15 keeping the material characteristics and drop height of the falling mass constant across all the eight cases, have been considered herein to investigate the influence of impactor's taper angle on the anti-impact response of the validated square slab in Abaqus Explicit package program. A comparison of several response parameters including displacement, damage, stress distribution, and plastic dissipation energy has been done with the validated model, and the geometries of the impactor causing the maximum and minimum damages are identified. A key finding from this study is that all considered impacting geometries lead to bond failure in the lower layer of the re-bars, however, the impactors having the geometry with taper angles below 45 possess the capacity to induce bond failure in the re-bars of the upper layer too, beyond the impacted region. ? 2024 EDP Sciences. All rights reserved.
author2 57219929545
author_facet 57219929545
Anas S.M.
Al-Dala'ien R.N.
Alam M.
Akram S.
format Conference paper
author Anas S.M.
Al-Dala'ien R.N.
Alam M.
Akram S.
spellingShingle Anas S.M.
Al-Dala'ien R.N.
Alam M.
Akram S.
Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass
author_sort Anas S.M.
title Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass
title_short Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass
title_full Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass
title_fullStr Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass
title_full_unstemmed Effect of Impactor's Taper Angle on the Response of a Square Slab to a Falling Mass
title_sort effect of impactor's taper angle on the response of a square slab to a falling mass
publisher EDP Sciences
publishDate 2025
_version_ 1825816243862503424
score 13.244413

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