G0300-8-2 カテーテルの変形挙動と強度に関する研究 : 軸力と捩りが同時に作用する場合の座屈発生領域について([G0300-8]材料力学部門一般講演(8):座屈強度)

概要

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The physical properties of the catheter, which made of soft nylon resin and is reinforced with thin stainless wires called braid, are investigated in this paper. In our previous report, the combined loading tests for bending and torsion are carried out, and the visco-elastic response is investigated by performing experiments that changes the relative angle between the principal axis of stress and the braid. Moreover, the numerical model is proposed and the validity of this model is verified by comparing it with these experimental results. On the other hand, the buckling behavior under uni-axial load is researched under different deformation speed and the close relation between the buckling load and the phenomenon of stress relaxation are revealed. In this report, the buckling tests are carried out by applying the axial force and the twisting moment simultaneously, and the buckling region under combined loading of axial force and torsion is verified.
一般社団法人日本機械学会の論文
2010-09-04