Finite-Element Analysis of the Double Lateral Compression of Clad Tube into a Symmetric Square-Tube

Abstract:

The squaring process to shape a circular tube into a symmetric square clad tube is examined by a three-dimensional incremental elastic-plastic finite-element method based on an updated Lagrangian formulation. The effects of various parameters, such as geometric ratio R/t, strain hardening exponent n, friction coefficient μ, and the length of tube L, on the occurrence of collapse in the squaring process are discussed and interpreted in a theoretical manner. The findings show that geometric ratio is the major factor in the process of squaring circular tubes. When R/t=25, serious collapse is likely to appear. Aiming at circular tubes with geometric ratio R/t=25, this study proposes six analysis configurations for clad tubes to discuss the possibility of clad tubes avoiding collapse. The findings showed that clad tubes could effectively reduce the collapse ratio.

• Periodical: Advanced Materials Research (Volume 337)
• Pages: 332-335
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.337.332
• Online since: September 2011
• Authors: Tsung Chia Chen, Jiun Ming Ye
• Keywords: Clad Tube, Collapse, Elastic-Plastic, Square-Tube, Squaring

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