Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses

Aircraft impact analysis is needed for safety assessment of nuclear power plants. One of the items which should be analyzed for aircraft impact is physical damage to a reinforced concrete (RC) building and this can be estimated by numerical simulation. In the simulation, a simulation model which has...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kazuma HIROSAKA, Hidekazu TAKAZAWA, Katsumasa MIYAZAKI, Norihide TOHYAMA, Hiroyuki NOJI, Naomi MATSUMOTO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	aircraft impact analysis impact simulation simulation model empirical equation Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/5b1db7c5435b486d9a283572b7c252b8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5b1db7c5435b486d9a283572b7c252b8
record_format	dspace
spelling	oai:doaj.org-article:5b1db7c5435b486d9a283572b7c252b82021-11-29T05:48:33ZNumerical impact simulation of aircraft into reinforced concrete walls with different thicknesses2187-974510.1299/mej.19-00222https://doaj.org/article/5b1db7c5435b486d9a283572b7c252b82019-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/6/6_19-00222/_pdf/-char/enhttps://doaj.org/toc/2187-9745Aircraft impact analysis is needed for safety assessment of nuclear power plants. One of the items which should be analyzed for aircraft impact is physical damage to a reinforced concrete (RC) building and this can be estimated by numerical simulation. In the simulation, a simulation model which has been validated by some experimental data needs to be established. In 1988, an aircraft impact test using an F4 Phantom fighter was conducted at the Sandia National Laboratories in the US and a lot of important experimental data were measured. The numerical simulation results for this aircraft impact test are also introduced in this paper. The relationship between the thickness and the deceleration of the aircraft model is studied and then the differences in the deceleration between the simulation and test results are discussed. The relationship between the failure strain and the destruction modes of the aircraft and the target in the simulation are also studied, and then the differences between the simulation and test results are discussed as well. Through these parametric simulations, the validations of the aircraft and the target model are demonstrated. In evaluating the physical damage area inside the buildings, or discussing the necessary numbers of RC walls until the impacting aircraft stops, it is important to estimate whether the RC walls are perforated by an impacting aircraft. Besides numerical simulations, some empirical equations to estimate them are reported. One of them is the UKAEA equation. This equation estimates a dynamic punching strength of a RC wall. It is determined whether an impacting aircraft perforates a RC wall by comparing the dynamic punching strength with the dynamic impact load of the aircraft. In this paper, several aircraft impact simulations using the established aircraft model with different RC wall thicknesses are conducted. Dynamic punching strength of these RC walls are measured in each simulation. The obtained values in the simulations are compared with the estimated values by the UKAEA equation. The differences between them are investigated and the reasons of these differences are discussed.Kazuma HIROSAKAHidekazu TAKAZAWAKatsumasa MIYAZAKINorihide TOHYAMAHiroyuki NOJINaomi MATSUMOTOThe Japan Society of Mechanical Engineersarticleaircraft impact analysisimpact simulationsimulation modelempirical equationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 6, Pp 19-00222-19-00222 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	aircraft impact analysis impact simulation simulation model empirical equation Mechanical engineering and machinery TJ1-1570
spellingShingle	aircraft impact analysis impact simulation simulation model empirical equation Mechanical engineering and machinery TJ1-1570 Kazuma HIROSAKA Hidekazu TAKAZAWA Katsumasa MIYAZAKI Norihide TOHYAMA Hiroyuki NOJI Naomi MATSUMOTO Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
description	Aircraft impact analysis is needed for safety assessment of nuclear power plants. One of the items which should be analyzed for aircraft impact is physical damage to a reinforced concrete (RC) building and this can be estimated by numerical simulation. In the simulation, a simulation model which has been validated by some experimental data needs to be established. In 1988, an aircraft impact test using an F4 Phantom fighter was conducted at the Sandia National Laboratories in the US and a lot of important experimental data were measured. The numerical simulation results for this aircraft impact test are also introduced in this paper. The relationship between the thickness and the deceleration of the aircraft model is studied and then the differences in the deceleration between the simulation and test results are discussed. The relationship between the failure strain and the destruction modes of the aircraft and the target in the simulation are also studied, and then the differences between the simulation and test results are discussed as well. Through these parametric simulations, the validations of the aircraft and the target model are demonstrated. In evaluating the physical damage area inside the buildings, or discussing the necessary numbers of RC walls until the impacting aircraft stops, it is important to estimate whether the RC walls are perforated by an impacting aircraft. Besides numerical simulations, some empirical equations to estimate them are reported. One of them is the UKAEA equation. This equation estimates a dynamic punching strength of a RC wall. It is determined whether an impacting aircraft perforates a RC wall by comparing the dynamic punching strength with the dynamic impact load of the aircraft. In this paper, several aircraft impact simulations using the established aircraft model with different RC wall thicknesses are conducted. Dynamic punching strength of these RC walls are measured in each simulation. The obtained values in the simulations are compared with the estimated values by the UKAEA equation. The differences between them are investigated and the reasons of these differences are discussed.
format	article
author	Kazuma HIROSAKA Hidekazu TAKAZAWA Katsumasa MIYAZAKI Norihide TOHYAMA Hiroyuki NOJI Naomi MATSUMOTO
author_facet	Kazuma HIROSAKA Hidekazu TAKAZAWA Katsumasa MIYAZAKI Norihide TOHYAMA Hiroyuki NOJI Naomi MATSUMOTO
author_sort	Kazuma HIROSAKA
title	Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
title_short	Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
title_full	Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
title_fullStr	Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
title_full_unstemmed	Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
title_sort	numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/5b1db7c5435b486d9a283572b7c252b8
work_keys_str_mv	AT kazumahirosaka numericalimpactsimulationofaircraftintoreinforcedconcretewallswithdifferentthicknesses AT hidekazutakazawa numericalimpactsimulationofaircraftintoreinforcedconcretewallswithdifferentthicknesses AT katsumasamiyazaki numericalimpactsimulationofaircraftintoreinforcedconcretewallswithdifferentthicknesses AT norihidetohyama numericalimpactsimulationofaircraftintoreinforcedconcretewallswithdifferentthicknesses AT hiroyukinoji numericalimpactsimulationofaircraftintoreinforcedconcretewallswithdifferentthicknesses AT naomimatsumoto numericalimpactsimulationofaircraftintoreinforcedconcretewallswithdifferentthicknesses
_version_	1718407585905770496

Numerical impact simulation of aircraft into reinforced concrete walls with different thicknesses

Ejemplares similares