Title: CONSIDERATIONS ON DRAWING OF PLASTIC TUBES WITH A CONICAL MANDREL
Abstract:The biaxial stretching mode of thin-walled plastic tube over a conical mandrel was discussed by using a hypothetical stress-draw ratio relation. The results of these calculations show that, when the c...The biaxial stretching mode of thin-walled plastic tube over a conical mandrel was discussed by using a hypothetical stress-draw ratio relation. The results of these calculations show that, when the change of stress in the longitudinal direction (the machine direction, MD) after the yielding point is small, the draw ratio in the MD, λ1, increases abruptly immediately after the yielding point of the tube in the MD. These results support the conclusions of the previous paper1).Read More