Creep Behavior of Catheter Reinforced with Braids: Analytical Simulation of Uniaxial Tension under Two-Stage Step Stress

Abstract:

This paper describes the creep deformation behavior of catheter which is made of soft nylon resin and is reinforced with thin stainless wires called braid. In this research, the creep deformation behavior of uniaxial tension generated under two-stage step stress is examined as the most fundamental case that the principal axis of stress is fixed in a space. And the mechanical model, which is composed of a Voigt unit and a single spring element, is proposed for representing the creep deformation behavior. Then, the numerical simulation is carried out, and the validity of this model is verified by comparing the analytical results with the experimental results under two-stage step stress.

• Periodical: Advanced Materials Research (Volume 856)
• Pages: 384-388
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.856.384
• Online since: December 2013
• Authors: Yasuyuki Kato*
• Keywords: Catheter, Creep Behavior, Mechanical Model, Numerical Simulation, Uniaxial Tension

References

[1] Y. Kato, S. Krosawa, M. Ueda, Visco-elastic Properties of Catheter Reinforced with Braids: Stress Relaxation under Two-stage Step Strain for Different Deformation Paths, Advanced Materials Research, Vols. 622-623 (2013), pp.1330-1334.

DOI: 10.4028/www.scientific.net/amr.622-623.1330

[2] Y. Kato, M. Ueda, Stress Relaxation Behavior of Catheter reinforced with Braid under Combined Loading for Bending and Torsion, Applied Mechanics and Materials Vol. 372 (2013) pp.261-264.

DOI: 10.4028/www.scientific.net/amm.372.261

[3] Aleksey D. Droxdov, Finite Elasticity and Viscoelasticity, World Scientific (1996).

[4] Skrzypek Jacek J., Plasticity and Creep, Theory, Examples, and Problems, CRC Press (1993).