Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory

A procedure for identifying plastic constitutive parameters from measured displacement fields based on virtual fields is proposed in this paper. The displacement fields of the specimen surface are obtained through measurements using global digital image correlation. Then, material property identific...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Shun HAMADA, Keita JINNO, Shuichi ARIKAWA, Satoru YONEYAMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	inverse problem material properties elasto-plastic global digital image correlation virtual fields method Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/35e55875ead1453c9ac8d21a5397ee49
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:35e55875ead1453c9ac8d21a5397ee49
record_format	dspace
spelling	oai:doaj.org-article:35e55875ead1453c9ac8d21a5397ee492021-11-26T06:58:32ZIdentification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory2187-974510.1299/mej.16-00106https://doaj.org/article/35e55875ead1453c9ac8d21a5397ee492016-11-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/6/3_16-00106/_pdf/-char/enhttps://doaj.org/toc/2187-9745A procedure for identifying plastic constitutive parameters from measured displacement fields based on virtual fields is proposed in this paper. The displacement fields of the specimen surface are obtained through measurements using global digital image correlation. Then, material property identification is implemented by utilizing piecewise virtual fields. In order to identify the material properties from the displacement fields obtained at an instant, the total strain theory is used as the constitutive equation. The relations between the material properties, measured displacement fields, measured tractions, and virtual displacements are obtained from the principle of virtual work, and they are solved numerically to obtain material properties. The effectiveness of the proposed method is demonstrated by applying it to displacement fields obtained by an elasto-plastic finite element method and experimentally obtained displacement fields of a pure aluminum specimen. The results of the numerical validation show that the elasto-plastic material properties can be identified from a single set of displacement fields under proportional loading. Meanwhile, the results of the experimental validation show that the elasto-plastic material properties can be evaluated but the discrepancy between the inversely identified stress-strain curve and the directly measured one is observed.Shun HAMADAKeita JINNOShuichi ARIKAWASatoru YONEYAMAThe Japan Society of Mechanical Engineersarticleinverse problemmaterial propertieselasto-plasticglobal digital image correlationvirtual fields methodMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 6, Pp 16-00106-16-00106 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	inverse problem material properties elasto-plastic global digital image correlation virtual fields method Mechanical engineering and machinery TJ1-1570
spellingShingle	inverse problem material properties elasto-plastic global digital image correlation virtual fields method Mechanical engineering and machinery TJ1-1570 Shun HAMADA Keita JINNO Shuichi ARIKAWA Satoru YONEYAMA Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
description	A procedure for identifying plastic constitutive parameters from measured displacement fields based on virtual fields is proposed in this paper. The displacement fields of the specimen surface are obtained through measurements using global digital image correlation. Then, material property identification is implemented by utilizing piecewise virtual fields. In order to identify the material properties from the displacement fields obtained at an instant, the total strain theory is used as the constitutive equation. The relations between the material properties, measured displacement fields, measured tractions, and virtual displacements are obtained from the principle of virtual work, and they are solved numerically to obtain material properties. The effectiveness of the proposed method is demonstrated by applying it to displacement fields obtained by an elasto-plastic finite element method and experimentally obtained displacement fields of a pure aluminum specimen. The results of the numerical validation show that the elasto-plastic material properties can be identified from a single set of displacement fields under proportional loading. Meanwhile, the results of the experimental validation show that the elasto-plastic material properties can be evaluated but the discrepancy between the inversely identified stress-strain curve and the directly measured one is observed.
format	article
author	Shun HAMADA Keita JINNO Shuichi ARIKAWA Satoru YONEYAMA
author_facet	Shun HAMADA Keita JINNO Shuichi ARIKAWA Satoru YONEYAMA
author_sort	Shun HAMADA
title	Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
title_short	Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
title_full	Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
title_fullStr	Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
title_full_unstemmed	Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
title_sort	identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/35e55875ead1453c9ac8d21a5397ee49
work_keys_str_mv	AT shunhamada identificationofplasticstressstrainparametersbyglobaldigitalimagecorrelationthevirtualfieldsmethodandthetotalstraintheory AT keitajinno identificationofplasticstressstrainparametersbyglobaldigitalimagecorrelationthevirtualfieldsmethodandthetotalstraintheory AT shuichiarikawa identificationofplasticstressstrainparametersbyglobaldigitalimagecorrelationthevirtualfieldsmethodandthetotalstraintheory AT satoruyoneyama identificationofplasticstressstrainparametersbyglobaldigitalimagecorrelationthevirtualfieldsmethodandthetotalstraintheory
_version_	1718409711203647488

Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory

Ejemplares similares