Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
This paper describes the relation between the flattening phenomenon in the cross section and the visco-plastic behavior in the catheter made of soft nylon resin reinforced with thin stainless wires. In particular, the flattening phenomenon occurs when the torsional moment is applied after axial load. Therefore, in this study, the occurrence region of the flattening phenomenon is examined based on the visco-plastic theory. In consideration of the shape of cross section gradually changing into the elliptical shape during the process of applying the torsional moment, the experimental equation for the torsional moment is derived based on the shear flow theory for determining the occurrence region of flattening phenomenon. Especially, in the present study, considering actual usage conditions of the catheter, the experiments are conducted in water condition and non-water condition.
