Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance

The surface texture formed by the micro asperities on the surface of the solid members induces the stiffness reduction of the structure constructed by screws and bolts. In recent years, the fixing by screws and bolts is one of the primary fixing methods to construct multi-material structures, and th...

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Autores principales:	Yoshinao KISHIMOTO, Yukiyoshi KOBAYASHI, Toshihisa OHTSUKA, Motoi NIIZUMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	inverse problem finite element method homogenization method surface texture natural frequency fixing tribology surface roughness interfacial stiffness multi-material structures Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/c2782d0556c14802a6d7cd829d8b7b74
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spelling	oai:doaj.org-article:c2782d0556c14802a6d7cd829d8b7b742021-11-29T05:43:34ZLimitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance2187-974510.1299/mej.18-00123https://doaj.org/article/c2782d0556c14802a6d7cd829d8b7b742019-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/3/6_18-00123/_pdf/-char/enhttps://doaj.org/toc/2187-9745The surface texture formed by the micro asperities on the surface of the solid members induces the stiffness reduction of the structure constructed by screws and bolts. In recent years, the fixing by screws and bolts is one of the primary fixing methods to construct multi-material structures, and the fixing state such as the interfacial stiffness at the clamped part is required to be evaluated for the proper fixing. The interfacial stiffness affects the total stiffness of the structure and is dominated by the surface texture and the clamping force. Especially, the standard deviation of the asperity peak heights and the homogenized elastic modulus collectively named as the surface texture parameters mainly determine the interfacial stiffness. This study has developed an estimation method of the surface texture parameters by the inverse analysis of the hammering test data, and numerically investigated the basic behavior and the estimation error of the inverse analysis for the establishment of the methodology to find the limitation of the proposed method against the disturbance in the hammering test data. In the investigation, a theoretical limitation of the inverse analysis has been derived by the linear approximation, and a numerical simulation which is the same approach as the Monte Carlo simulation has been performed by using a bolted joint model consisting of two plates joined by the eight sets of the bolt and nut. From the results of the numerical simulation, the followings were summarized: 1) The recalculation error of the natural frequency subjected to the clamping force is as large as the disturbance in the hammering test data. 2) The sensitivity of the homogenized elastic modulus is much smaller than that of the standard deviation of the asperity peak heights in the inverse analysis. 3) The theoretical limitation of the linear approximation can qualitatively predict the estimation errors of the surface texture parameters.Yoshinao KISHIMOTOYukiyoshi KOBAYASHIToshihisa OHTSUKAMotoi NIIZUMAThe Japan Society of Mechanical Engineersarticleinverse problemfinite element methodhomogenization methodsurface texturenatural frequencyfixingtribologysurface roughnessinterfacial stiffnessmulti-material structuresMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 3, Pp 18-00123-18-00123 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	inverse problem finite element method homogenization method surface texture natural frequency fixing tribology surface roughness interfacial stiffness multi-material structures Mechanical engineering and machinery TJ1-1570
spellingShingle	inverse problem finite element method homogenization method surface texture natural frequency fixing tribology surface roughness interfacial stiffness multi-material structures Mechanical engineering and machinery TJ1-1570 Yoshinao KISHIMOTO Yukiyoshi KOBAYASHI Toshihisa OHTSUKA Motoi NIIZUMA Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
description	The surface texture formed by the micro asperities on the surface of the solid members induces the stiffness reduction of the structure constructed by screws and bolts. In recent years, the fixing by screws and bolts is one of the primary fixing methods to construct multi-material structures, and the fixing state such as the interfacial stiffness at the clamped part is required to be evaluated for the proper fixing. The interfacial stiffness affects the total stiffness of the structure and is dominated by the surface texture and the clamping force. Especially, the standard deviation of the asperity peak heights and the homogenized elastic modulus collectively named as the surface texture parameters mainly determine the interfacial stiffness. This study has developed an estimation method of the surface texture parameters by the inverse analysis of the hammering test data, and numerically investigated the basic behavior and the estimation error of the inverse analysis for the establishment of the methodology to find the limitation of the proposed method against the disturbance in the hammering test data. In the investigation, a theoretical limitation of the inverse analysis has been derived by the linear approximation, and a numerical simulation which is the same approach as the Monte Carlo simulation has been performed by using a bolted joint model consisting of two plates joined by the eight sets of the bolt and nut. From the results of the numerical simulation, the followings were summarized: 1) The recalculation error of the natural frequency subjected to the clamping force is as large as the disturbance in the hammering test data. 2) The sensitivity of the homogenized elastic modulus is much smaller than that of the standard deviation of the asperity peak heights in the inverse analysis. 3) The theoretical limitation of the linear approximation can qualitatively predict the estimation errors of the surface texture parameters.
format	article
author	Yoshinao KISHIMOTO Yukiyoshi KOBAYASHI Toshihisa OHTSUKA Motoi NIIZUMA
author_facet	Yoshinao KISHIMOTO Yukiyoshi KOBAYASHI Toshihisa OHTSUKA Motoi NIIZUMA
author_sort	Yoshinao KISHIMOTO
title	Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
title_short	Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
title_full	Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
title_fullStr	Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
title_full_unstemmed	Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
title_sort	limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/c2782d0556c14802a6d7cd829d8b7b74
work_keys_str_mv	AT yoshinaokishimoto limitationofestimationmethodofsurfacetextureparametersbyinverseanalysisofhammeringtestdatawithdisturbance AT yukiyoshikobayashi limitationofestimationmethodofsurfacetextureparametersbyinverseanalysisofhammeringtestdatawithdisturbance AT toshihisaohtsuka limitationofestimationmethodofsurfacetextureparametersbyinverseanalysisofhammeringtestdatawithdisturbance AT motoiniizuma limitationofestimationmethodofsurfacetextureparametersbyinverseanalysisofhammeringtestdatawithdisturbance
_version_	1718407671379394560

Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance

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