Effects of Reinforcing Rib on Draw Bending of Pipes Examined by Finite Element Method

Autor:	Shuji Sakaki, Eitaro Usuda, Noah Utsumi
Rok vydání:	2008
Předmět:	Rib cage Materials science Mechanical Engineering Alloy chemistry.chemical_element Bending engineering.material Condensed Matter Physics Finite element method Flattening Buckling chemistry Mechanics of Materials Aluminium engineering Formability General Materials Science Composite material
Zdroj:	MATERIALS TRANSACTIONS. 49:1812-1817
ISSN:	1347-5320 1345-9678
DOI:	10.2320/matertrans.p-mra2008815
Popis:	In recent years, thin aluminum alloy extruded pipes have been applied to structural parts, such as automobile space frames, to save energy. If the aluminum pipes could be processed in a greater variety of ways, such as bending, their range of applications would expand. In our previous study, we evaluated the bending of thin extruded square pipes. In the current study, we examined the bending formability of aluminum alloy pipes with reinforcing ribs using the finite element method (FEM). The influence of the reinforcing ribs on the form accuracy of the aluminum pipes in draw bending was investigated. The effective arrangement and thickness of a reinforcing rib was also investigated. As a result, it was clarified that two types of buckling arise for the reinforcing rib. Furthermore, a critical ratio T = t 2 /t 1 (t 1 : the circular portion thickness of pipe; t 2 : the thickness of rib) for controlling buckling and flattening was proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::53f8852d90aa588b50f08c706783795a https://doi.org/10.2320/matertrans.p-mra2008815 Zobrazit plný text záznamu