Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis

Multi-material structure is expected to be the main scheme to construct automobiles. Many methods have been studied to properly fix or bond dissimilar materials. The fixing by the bolts and nuts is one of the primary fixing methods, and has the advantage of easy assembly and disassembly. The interfa...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yoshinao KISHIMOTO, Yukiyoshi KOBAYASHI, Toshihisa OHTSUKA, Akira MATSUMOTO, Motoi NIIZUMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	inverse problem finite element method multi-material structure bolted joint interfacial stiffness natural frequency clamping force surface roughness Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/e2424892cd7c49a09162de5bfc28ccb5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e2424892cd7c49a09162de5bfc28ccb5
record_format	dspace
spelling	oai:doaj.org-article:e2424892cd7c49a09162de5bfc28ccb52021-11-29T05:43:34ZEstimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis2187-974510.1299/mej.18-00471https://doaj.org/article/e2424892cd7c49a09162de5bfc28ccb52019-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/3/6_18-00471/_pdf/-char/enhttps://doaj.org/toc/2187-9745Multi-material structure is expected to be the main scheme to construct automobiles. Many methods have been studied to properly fix or bond dissimilar materials. The fixing by the bolts and nuts is one of the primary fixing methods, and has the advantage of easy assembly and disassembly. The interfacial stiffness of the bolted joints is lower than the stiffness of the base materials and varied by the clamping force of the bolts and nuts, because the micro asperities formed on the interfaces just contact each other. The contact analysis by using the surface profile of the interfaces in microscale is one of the accurate estimations. However, the estimation method of the interfacial stiffness in macroscale is also necessary for the in-situ evaluation. This study has developed an estimation method of the interfacial stiffness by the inverse analysis of the clamping force and the natural frequency of the structure. The inverse analysis algorithm introduces the mathematical model of the interfaces in which the contact of the surfaces is assumed to be the contact of the elastic asperities whose peak heights obey the Gaussian distribution. The hammering test was conducted by using the specimen which consisted of the steel plate and the aluminum alloy plate joined by the bolts and nuts. Moreover, as the contact analysis, the finite element method simulated the contact of the asperities formed on the interfaces by using the surface profile of the interfaces. The results showed that the proposed method could estimate the interfacial stiffness which reproduced the natural frequency of the specimen subjected to the clamping force of the bolts and nuts. The interfacial stiffness estimated by the proposed method was comparable to that calculated by the contact analysis.Yoshinao KISHIMOTOYukiyoshi KOBAYASHIToshihisa OHTSUKAAkira MATSUMOTOMotoi NIIZUMAThe Japan Society of Mechanical Engineersarticleinverse problemfinite element methodmulti-material structurebolted jointinterfacial stiffnessnatural frequencyclamping forcesurface roughnessMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 3, Pp 18-00471-18-00471 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	inverse problem finite element method multi-material structure bolted joint interfacial stiffness natural frequency clamping force surface roughness Mechanical engineering and machinery TJ1-1570
spellingShingle	inverse problem finite element method multi-material structure bolted joint interfacial stiffness natural frequency clamping force surface roughness Mechanical engineering and machinery TJ1-1570 Yoshinao KISHIMOTO Yukiyoshi KOBAYASHI Toshihisa OHTSUKA Akira MATSUMOTO Motoi NIIZUMA Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
description	Multi-material structure is expected to be the main scheme to construct automobiles. Many methods have been studied to properly fix or bond dissimilar materials. The fixing by the bolts and nuts is one of the primary fixing methods, and has the advantage of easy assembly and disassembly. The interfacial stiffness of the bolted joints is lower than the stiffness of the base materials and varied by the clamping force of the bolts and nuts, because the micro asperities formed on the interfaces just contact each other. The contact analysis by using the surface profile of the interfaces in microscale is one of the accurate estimations. However, the estimation method of the interfacial stiffness in macroscale is also necessary for the in-situ evaluation. This study has developed an estimation method of the interfacial stiffness by the inverse analysis of the clamping force and the natural frequency of the structure. The inverse analysis algorithm introduces the mathematical model of the interfaces in which the contact of the surfaces is assumed to be the contact of the elastic asperities whose peak heights obey the Gaussian distribution. The hammering test was conducted by using the specimen which consisted of the steel plate and the aluminum alloy plate joined by the bolts and nuts. Moreover, as the contact analysis, the finite element method simulated the contact of the asperities formed on the interfaces by using the surface profile of the interfaces. The results showed that the proposed method could estimate the interfacial stiffness which reproduced the natural frequency of the specimen subjected to the clamping force of the bolts and nuts. The interfacial stiffness estimated by the proposed method was comparable to that calculated by the contact analysis.
format	article
author	Yoshinao KISHIMOTO Yukiyoshi KOBAYASHI Toshihisa OHTSUKA Akira MATSUMOTO Motoi NIIZUMA
author_facet	Yoshinao KISHIMOTO Yukiyoshi KOBAYASHI Toshihisa OHTSUKA Akira MATSUMOTO Motoi NIIZUMA
author_sort	Yoshinao KISHIMOTO
title	Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
title_short	Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
title_full	Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
title_fullStr	Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
title_full_unstemmed	Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
title_sort	estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/e2424892cd7c49a09162de5bfc28ccb5
work_keys_str_mv	AT yoshinaokishimoto estimationmethodofinterfacialstiffnessofboltedjointinmultimaterialstructurebyinverseanalysis AT yukiyoshikobayashi estimationmethodofinterfacialstiffnessofboltedjointinmultimaterialstructurebyinverseanalysis AT toshihisaohtsuka estimationmethodofinterfacialstiffnessofboltedjointinmultimaterialstructurebyinverseanalysis AT akiramatsumoto estimationmethodofinterfacialstiffnessofboltedjointinmultimaterialstructurebyinverseanalysis AT motoiniizuma estimationmethodofinterfacialstiffnessofboltedjointinmultimaterialstructurebyinverseanalysis
_version_	1718407679343329280

Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis

Ejemplares similares