Research on corner filling behavior of V-shaped cross-section tube during hydro-pressing
Based on the mechanical analysis,the internal pressure required for V-shaped cross-section tube in corner forming was studied by finite element simulation and hydro-pressing forming experiments.The hydro-pressing experiments were conducted under different inter-nal pressures to study the changes of wall thickness of formed tubes.The appropriate experimental parameters were selected through theo-retical calculation,and the torsion beam part that meets the requirements was formed.The results show that the smaller the corner radius,the greater the internal pressure required for forming;the internal corner radius of the V-shaped cross-section tube decreases with the in-crease of the internal pressure,while the outer corner radius increases with the increase of the internal pressure;the wall thickness thick-ening of V-shaped cross-section tube mainly occurs in the upper corner zone,and the thinning mainly occurs in the lower corner zone,with the maximum thinning occurring at the center of the lower corner zone.
hydro-pressingV-shaped cross-section tubecorner fillinginternal pressurewall thickness distribution
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