Homework and Quiz — Overview of Stents

Simulation introduction video:

Homework 1

It is necessary to check the stents for Mechanical responses under different types of loadings. This example shows how a stent behaves under a bending moment. The stent is modeled using beams. Download the geometry, instruction files, and archived model from here. 

• Please utilize the mm,Kg,N unit system when solving the Ansys simulation models.
• Please also note that the results you obtain in these nonlinear analyses may differ slightly from those shown in the videos. Numerical round-off due to finite machine precision can be affected by the choice of operating system, number of cores, and type of parallel processing (shared-memory vs. distributed-memory). Moreover, nonlinear contact and solution algorithms are often improved in each version of our software, so some changes are expected when comparing results between different releases. Thus, your results may differ slightly (within typical engineering tolerances) from the presented results, but this is to be expected for nonlinear analyses, especially for numerical unstable (e.g., underconstrained) models that may be utilized in this course.

Homework 2

This model simulates the static analysis of the crushing of the stent. The self-expanding stents are designed to regain their shape after crushing, bending or twisting. We will determine the displacements, stresses, and strain, etc. Download the geometry, instruction files, and archived model from here. 

• Please utilize the mm,Kg,N unit system when solving the Ansys simulation models.
• Please also note that the results you obtain in these nonlinear analyses may differ slightly from those shown in the videos. Numerical round-off due to finite machine precision can be affected by the choice of operating system, number of cores, and type of parallel processing (shared-memory vs. distributed-memory). Moreover, nonlinear contact and solution algorithms are often improved in each version of our software, so some changes are expected when comparing results between different releases. Thus, your results may differ slightly (within typical engineering tolerances) from the presented results, but this is to be expected for nonlinear analyses, especially for numerical unstable (e.g., underconstrained) models that may be utilized in this course.

Completed simulation files for the above examples can be found here.