Study on Elastoplastic Pure Bending Collapse of Cylindrical Tubes

In this paper, the elastoplastic bending collapse of cylindrical tube subjected to statically pure bending is studied by using finite element method (FEM). It is revealed in the case of infinite length that the moment of the elastoplastic cylindrical tube is controlled by flattening ratio of tube. A...

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Bibliographic Details
Published inNihon Kikai Gakkai ronbunshū. A Vol. 74; no. 740; pp. 520 - 527
Main Authors CHEN, Dai-Heng, MASUDA, Kenichi, OZAKI, Shingo
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 2008
Subjects
Cylindrical Tube
Finite Element Method
Ovalisation
Plasticity
Pure Bending Collapse
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Summary:In this paper, the elastoplastic bending collapse of cylindrical tube subjected to statically pure bending is studied by using finite element method (FEM). It is revealed in the case of infinite length that the moment of the elastoplastic cylindrical tube is controlled by flattening ratio of tube. Also, it is shown that the flattening ratio of tube can be expressed by axial and circumferential stress as a function of the material and geometrical properties and curvatures. Based on these facts, an approximate numerical method to estimate the maximum moment of cylindrical tubes is proposed, and its validity is shown by comparing with numerical results of FEM.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0387-5008
1884-8338
DOI:10.1299/kikaia.74.520