ASTM-F2514:2008 Edition

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F2514-08 Standard Guide for Finite Element Analysis (FEA) of Metallic Vascular Stents Subjected to Uniform Radial Loading

Published By	Publication Date	Number of Pages
ASTM	2008	8

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Categories: 11.040.40 - Implants for surgery, prosthetics and orthotics, ASTM

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Description

ASTM F2514-08

Historical Standard: Standard Guide for Finite Element Analysis (FEA) of Metallic Vascular Stents Subjected to Uniform Radial Loading

ASTM F2514

Scope

1.1 Purpose—This guide establishes general requirements and considerations for the development of finite element models used in the evaluation of the performance of a metallic vascular stent design under uniform radial loading. Suggested criteria are provided for evaluating the typical cases of metallic stents under uniform radially oriented and pulsatile loading. Recommended procedures for checking and validating the finite element model(s) are provided as a means to assess the model and analysis results. Finally, the recommended content of an engineering report covering the mechanical simulations is presented.

1.2 Limits:

1.2.1 This guide is limited in discussion to the finite element structural analysis of metallic stents of the following types:

1.2.1.1 Plastically deformable metal stents.

1.2.1.2 Self-expanding metal stents.

1.2.1.3 Plastically deformable metal portions of covered stents.

1.2.1.4 Metal portions of self-expanding covered metal stents.

1.2.2 The emphasis of the techniques described in this guide is intended for both elasto-plastic materials such as stainless steel, and superelastic materials such as nitinol. Unique concerns associated with stents designed for shape memory behavior are not addressed within this guide.

1.2.3 This guide does not consider changes to possible time varying conditions or different loadings related to vascular remodeling.

1.2.4 This guide is restricted to cases that involve the application of uniform radially oriented loading.

1.2.5 This guide does not provide guidance in the application or interpretation of FEA in determining fatigue life.

1.2.6 This guide is not intended to include complete descriptions of the finite element method, nor its theoretical basis and formulation.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

Keywords

contact; cyclic loading; displacement; fatigue loading; finite element analysis (FEA); model calibration; model validation; model verification; nonlinear models; radial loading; shape memory alloys; solution sensitivity; stents; strain; stress

ICS Code

ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)

DOI: 10.1520/F2514-08

PDF Catalog

PDF Pages	PDF Title
1	Scope Terminology
2	Summary of Practice Significance and Use Overall Technical Approach
3	Input Data
5	Analysis
7	Deviations Acceptance Criteria Report
8	Keywords REFERENCES

Additional information

Standard Title	F2514-08 Standard Guide for Finite Element Analysis (FEA) of Metallic Vascular Stents Subjected to Uniform Radial Loading
Published Code	ASTM
Publication Date	2008
Pages Count	8
ICS Codes	11.040.40 - Implants for surgery, prosthetics and orthotics