On the phenomenon of impact

Aerostructures such as plates are commonly used in aircraft structures due to their advantageous weight to stiffness ratio. Plates are susceptible to lateral forces that occur during impact. Such impact events are caused by falling tools, bird strikes, collisions of objects, and more. Several resear...

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Autores principales:	Kalapis Stephan, Dafnis Athanasios, Schröder Kai-Uwe
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/52d18c0b6d77448e9f40e88ac732e1c4
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spelling	oai:doaj.org-article:52d18c0b6d77448e9f40e88ac732e1c42021-12-02T17:13:46ZOn the phenomenon of impact2261-236X10.1051/matecconf/202134903002https://doaj.org/article/52d18c0b6d77448e9f40e88ac732e1c42021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_03002.pdfhttps://doaj.org/toc/2261-236XAerostructures such as plates are commonly used in aircraft structures due to their advantageous weight to stiffness ratio. Plates are susceptible to lateral forces that occur during impact. Such impact events are caused by falling tools, bird strikes, collisions of objects, and more. Several researchers have studied impact events, but not yet the behaviour of the plate and impactor shortly after impact due to various factors. In this paper, the semi-analytical approach of Karas is used to calculate key parameters for the analysis of an impact. Karas derived this approach to calculate an impact for a simply supported plate that is impacted in the center. Here, this approach is extended to calculate the impact event at any location on the plate. The linear semi-analytical approach is written in a Python script to obtain fast results. In a code-to-code analysis, this Python code is verified with a commercial FE solver. Various parameters are varied and investigated to analyze and describe the impact phenomenon. In addition to the influence of the initial velocity of the impactor, the mass ratio of the two bodies and the impact location are also investigated. The analysis shows that the contact force and maximum displacement during an impact varies depending on the impact location, while all other parameters are kept constant. Depending on the impact location, the contact force between impactor and plate can be nine times higher than the lowest value.Kalapis StephanDafnis AthanasiosSchröder Kai-UweEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 03002 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Kalapis Stephan Dafnis Athanasios Schröder Kai-Uwe On the phenomenon of impact
description	Aerostructures such as plates are commonly used in aircraft structures due to their advantageous weight to stiffness ratio. Plates are susceptible to lateral forces that occur during impact. Such impact events are caused by falling tools, bird strikes, collisions of objects, and more. Several researchers have studied impact events, but not yet the behaviour of the plate and impactor shortly after impact due to various factors. In this paper, the semi-analytical approach of Karas is used to calculate key parameters for the analysis of an impact. Karas derived this approach to calculate an impact for a simply supported plate that is impacted in the center. Here, this approach is extended to calculate the impact event at any location on the plate. The linear semi-analytical approach is written in a Python script to obtain fast results. In a code-to-code analysis, this Python code is verified with a commercial FE solver. Various parameters are varied and investigated to analyze and describe the impact phenomenon. In addition to the influence of the initial velocity of the impactor, the mass ratio of the two bodies and the impact location are also investigated. The analysis shows that the contact force and maximum displacement during an impact varies depending on the impact location, while all other parameters are kept constant. Depending on the impact location, the contact force between impactor and plate can be nine times higher than the lowest value.
format	article
author	Kalapis Stephan Dafnis Athanasios Schröder Kai-Uwe
author_facet	Kalapis Stephan Dafnis Athanasios Schröder Kai-Uwe
author_sort	Kalapis Stephan
title	On the phenomenon of impact
title_short	On the phenomenon of impact
title_full	On the phenomenon of impact
title_fullStr	On the phenomenon of impact
title_full_unstemmed	On the phenomenon of impact
title_sort	on the phenomenon of impact
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/52d18c0b6d77448e9f40e88ac732e1c4
work_keys_str_mv	AT kalapisstephan onthephenomenonofimpact AT dafnisathanasios onthephenomenonofimpact AT schroderkaiuwe onthephenomenonofimpact
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On the phenomenon of impact

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