Dynamic Characteristic of SMA Intravascular Stent in Blood Stream Field

Author

Zhu, Zhi-Wen ; Zhai, Hai-Chao ; Wang, Hong-li

Author_Institution

Dept. of Mech., Tianjin Univ., Tianjin, China

fYear

2009

fDate

17-19 Oct. 2009

Firstpage

1

Lastpage

5

Abstract

In this paper, a kind of shape memory alloy (SMA) model based on multivariate statistical analysis was developed and applied in studying the vibration characteristic of SMA intravascular stent in blood stream field. Hysteretic nonlinear theory was introduced to interpret the difference between loading and unloading curve of SMA. Multivariate statistical analysis method was applied in finding the relationship among strain, stress and temperature. Dynamic characteristic of SMA intravascular stent in blood stream field was analyzed in multiscale method and the first-order approximate solution was obtained. Finally the stability of SMA beam system in blood stream field was analyzed. The new SMA model can describe the strain-stress hysteretic curves of SMA well, which is helpful to research on SMA in theory.

Keywords

biomechanics; biomedical materials; blood vessels; shape memory effects; statistical analysis; stress-strain relations; SMA intravascular stent; blood stream field; first-order approximate solution; hysteretic nonlinear theory; multivariate statistical analysis; shape memory alloy; strain-stress hysteretic curves; Blood; Capacitive sensors; Equations; Hysteresis; Nonlinear dynamical systems; Shape memory alloys; Statistical analysis; Stress; Temperature distribution; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics, 2009. BMEI '09. 2nd International Conference on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-4132-7

Electronic_ISBN

978-1-4244-4134-1

Type

conf

DOI

10.1109/BMEI.2009.5305552

Filename

5305552