Estimation of the residual stress on the thread root generated by thread rolling process

Yoshimoto had been presented a hypothesis concerning the fatigue strength of a bolt in bolt/nut assembly using Ishibashi's hypothesis on the relationship between the fatigue notch factor and the local stress distribution on the first thread root of a bolt mated with nut. By using Yoshimoto&...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Akihiro FURUKAWA, Masaya HAGIWARA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	fixing element bolt fatigue strength yoshimoto's hypothesis residual stress thread root thread rolling 3d fe analysis Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/0490f762ddb8408fbc04cc0bf194f601
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:0490f762ddb8408fbc04cc0bf194f601
record_format	dspace
spelling	oai:doaj.org-article:0490f762ddb8408fbc04cc0bf194f6012021-11-26T06:27:48ZEstimation of the residual stress on the thread root generated by thread rolling process2187-974510.1299/mej.14-00293https://doaj.org/article/0490f762ddb8408fbc04cc0bf194f6012015-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/4/2_14-00293/_pdf/-char/enhttps://doaj.org/toc/2187-9745Yoshimoto had been presented a hypothesis concerning the fatigue strength of a bolt in bolt/nut assembly using Ishibashi's hypothesis on the relationship between the fatigue notch factor and the local stress distribution on the first thread root of a bolt mated with nut. By using Yoshimoto's hypothesis, the effect of the manufacturing process (sequence or order of thread rolling and heat treatment processes) on the fatigue strength can be explained in connection with the axial residual stress at the first thread root of a bolt as a change of mean stress level. However, this hypothesis has not yet been verified quantitatively since the axial residual stress which may exist locally around the thread root could neither be measured nor estimated with sufficient accuracy. This study aims to quantify the axial residual stress on the thread root generated by thread rolling process. For this purpose, a method for simulating thread rolling process by using 3D elastic-plastic FEM was proposed to estimate the axial residual stress distribution by using precisely determined material property. Calculated results for two types of test specimens, one is grooved specimen with larger root radius and the other is leadless bolt specimen having the same thread profile as M10×1.25 bolts, show that the axial compressive residual stress of 1000 MPa level is generated at the root of the specimens. Finally, the validity of the simulation was confirmed through the X-ray stress measurement for grooved specimen, and the fatigue tests for leadless bolt specimen.Akihiro FURUKAWAMasaya HAGIWARAThe Japan Society of Mechanical Engineersarticlefixing elementboltfatigue strengthyoshimoto's hypothesisresidual stressthread rootthread rolling3d fe analysisMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 4, Pp 14-00293-14-00293 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	fixing element bolt fatigue strength yoshimoto's hypothesis residual stress thread root thread rolling 3d fe analysis Mechanical engineering and machinery TJ1-1570
spellingShingle	fixing element bolt fatigue strength yoshimoto's hypothesis residual stress thread root thread rolling 3d fe analysis Mechanical engineering and machinery TJ1-1570 Akihiro FURUKAWA Masaya HAGIWARA Estimation of the residual stress on the thread root generated by thread rolling process
description	Yoshimoto had been presented a hypothesis concerning the fatigue strength of a bolt in bolt/nut assembly using Ishibashi's hypothesis on the relationship between the fatigue notch factor and the local stress distribution on the first thread root of a bolt mated with nut. By using Yoshimoto's hypothesis, the effect of the manufacturing process (sequence or order of thread rolling and heat treatment processes) on the fatigue strength can be explained in connection with the axial residual stress at the first thread root of a bolt as a change of mean stress level. However, this hypothesis has not yet been verified quantitatively since the axial residual stress which may exist locally around the thread root could neither be measured nor estimated with sufficient accuracy. This study aims to quantify the axial residual stress on the thread root generated by thread rolling process. For this purpose, a method for simulating thread rolling process by using 3D elastic-plastic FEM was proposed to estimate the axial residual stress distribution by using precisely determined material property. Calculated results for two types of test specimens, one is grooved specimen with larger root radius and the other is leadless bolt specimen having the same thread profile as M10×1.25 bolts, show that the axial compressive residual stress of 1000 MPa level is generated at the root of the specimens. Finally, the validity of the simulation was confirmed through the X-ray stress measurement for grooved specimen, and the fatigue tests for leadless bolt specimen.
format	article
author	Akihiro FURUKAWA Masaya HAGIWARA
author_facet	Akihiro FURUKAWA Masaya HAGIWARA
author_sort	Akihiro FURUKAWA
title	Estimation of the residual stress on the thread root generated by thread rolling process
title_short	Estimation of the residual stress on the thread root generated by thread rolling process
title_full	Estimation of the residual stress on the thread root generated by thread rolling process
title_fullStr	Estimation of the residual stress on the thread root generated by thread rolling process
title_full_unstemmed	Estimation of the residual stress on the thread root generated by thread rolling process
title_sort	estimation of the residual stress on the thread root generated by thread rolling process
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/0490f762ddb8408fbc04cc0bf194f601
work_keys_str_mv	AT akihirofurukawa estimationoftheresidualstressonthethreadrootgeneratedbythreadrollingprocess AT masayahagiwara estimationoftheresidualstressonthethreadrootgeneratedbythreadrollingprocess
_version_	1718409759373131776

Estimation of the residual stress on the thread root generated by thread rolling process

Ejemplares similares