Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/827

Title

Finite element analysis of thin walled tubes under point loads subjected to large plastic deformation

Author(s)

Kardaras, C.;  Lu, Guoxing

Abstract

The Finite Element Analysis is used in the investigation of large deformations of thin cylindrical tubes subjected to diametrically opposed point loads about the mid-length, with unrestrained ends. The dimension of the tube being modelled were 76.2 mm O.D. x 1.2 mm wall with lengths of 1.6, 4, 6 and 10 diameters. The objectives of thr study are to report on the main characteristics of large deformations involving plasticity and strain hardening. The results show that the load-deflection response is non-linear in all cases with no tendency for 'snap-through' behaviour. For the three longest tubes, the initial collapse load occurs in the early stages of deformation and at the same load. Beyond this point, an increase in length corresponded with an increase in load. The results for the shortest tube, however, display buckling behaviour. The results of the 10D tube show stationary and travelling plastic hinges at the central cross-section and generators. Generally, bending strains dominate in the circumferential direction; whilst in the longitudinal direction, membrane strains were dominant.

Publication type

Journal article

Research centre

Swinburne University of Technology. School of Engineering and Science

Source

Key engineering materials, Vol. 177-180 (2000), pp. 733-738

Publication year

2000

Keyword(s)

Finite element analysis;  Large deformation;  Point loads;  Thin tubes

Publisher

Trans Tech Publications

Format

pp. 733-738

ISSN

1013-9826

Copyright

© 2000 Trans Tech Publications, Switzerland.

Peer reviewed