Analysis of a Balloon-Expandable Stent used in Coronary Artery Angioplasty
In this project I successfully analyzed Cardio-Vascular Stent on ANSYS and validated the numerical results for stent recoil percentage, maximum stresses, deformation, and residual stresses with other accepted industrial stent designs.
I also performed CFD analysis to study the effect of a stent on the flow of blood in the affected artery. The numerical results for velocity and pressure obtained is within the range of actual conditions in a healthy human artery.
The results for both Static Structural Analysis and CFD analysis were comparable, thus the modelling approach was correct.
Solid model of Cardio-vascular Stent
Stainless steel
Variation of velocity of blood in the stent
The blood velocity and pressure obtained by CFD analysis matched closely with that of the actual conditions in normal human artery, hence the modelling approach is correct.
CFD Analysis results
Velocity = 0.64 m/s
Pressure = 1139.03 Pa
Velocity Contour
This images shows the blood velocity contour along the iso-surface perpendicular to the cross-section of blood artery
Static Structural Analysis of Cardiovascular Stent
Studied the mechanical response as a result of balloon-stent-assembly expansion. Validated the results of Peak stress, Residual stresses and Stent Recoil Percentage with available industrial stent Designs.
Peak Stress = 344.36 MPa
Stent Recoil Percentage = 0.3%
Residual stresses = 294.51 MPa
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