Tube Bending Under Axial Force and Internal Pressure

Tube bending is a widely used manufacturing process in the aerospace, automotive, and various other industries. During tube bending, considerable in-plane distortion and thickness variation occurs. Additional loadings such as axial force and internal pressure can be used to achieve better shape control. Based on plasticity theories, analytical models are developed to predict cross-sectional distortion and thickness change of tubes under various loading conditions. The model predictions are in good agreement with finite element simulations and published experimental results. The models can be used to evaluate tooling and process design in tube bending.

[1]  S. Kyriakides,et al.  Bifurcation and localization instabilities in cylindrical shells under bending—I. Experiments , 1992 .

[2]  Stelios Kyriakides,et al.  On bend-stretch forming of aluminum extruded tubes — II: analysis , 2001 .

[3]  Stelios Kyriakides,et al.  On the Response of Elastic-Plastic Tubes Under Combined Bending and Tension , 1992 .

[4]  Stelios Kyriakides,et al.  On bend-stretch forming of aluminum extruded tubes - I: Experiments , 2001 .

[5]  Kim A. Stelson,et al.  Distortion of Rectangular Tubes in Stretch Bending , 2002 .

[6]  Jian Cao,et al.  Wrinkling Limit in Tube Bending , 2000, Manufacturing Engineering.

[7]  Yang He,et al.  A study on a 3D FE simulation method of the NC bending process of thin-walled tube , 2002 .

[8]  Stelios Kyriakides,et al.  On the collapse of inelastic tubes under combined bending and pressure , 1988 .

[9]  Kristoffer Trana,et al.  Finite element simulation of the tube hydroforming process—bending, preforming and hydroforming , 2002 .

[10]  Kim A. Stelson,et al.  On the Plastic Deformation of a Tube During Bending , 1995 .

[11]  Tongxi Yu,et al.  An investigation of the brazier effect of a cylindrical tube under pure elastic-plastic bending , 1987 .

[12]  L. Brazier.  ON THE FLEXURE OF THIN CYLINDRICAL SHELLS AND OTHER SECTION , 1927 .

[13]  Shiuan-Guang Shr,et al.  Bending of tubes for hydroforming : a state-of-the-art review and analysis , 1998 .

[14]  Soo-Ik Oh,et al.  The tube bending technology of a hydroforming process for an automotive part , 2001 .

[15]  N. C Tang,et al.  Plastic-deformation analysis in tube bending , 2000 .

[16]  Edmundo Corona,et al.  Buckling of elastic—plastic square tubes under bending , 1996 .