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A Comparison of Different Nitinol Material Data Sources for Finite Element Analysis.

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Title: A Comparison of Different Nitinol Material Data Sources for Finite Element Analysis.
Authors: Nagl, Frank1 fnagl@acandis.com, Siekmeyer, Gerd1, Quellmalz, Michael1, Schuessler, Andreas2
Source: Journal of Materials Engineering & Performance. Jun2011, Vol. 20 Issue 4/5, p737-744. 8p.
Subjects: Nickel-titanium alloys, Finite element method data processing, Artificial implants, Nondestructive testing, Mathematical models, Simulation methods & models, Product design, Heat treatment of metals
Abstract: Nitinol (NiTi) is widely used for minimal invasive vascular implants due to its superelastic material behavior. Today computerized finite element analysis (FEA) modeling is a standard tool for the development of medical devices and an essential part of the product design and device approval process (X. Gong and A.R. Pelton, ABAQUS Analysis on Nitinol Medical Applications, Proceedings of ABAQUS User's Conference, New Port, Rhode Island, , p 1; N. Rebelo and M. Perry, Finite Element Analysis for the Design of Nitinol Medical Devices, Min. Invas. Ther. Allied Technol., , 9(2), p 75). Quality of simulation depends on a multitude of parameters such as the mathematical material model and FE model generation (meshing). As such, a superior material data input is crucial in order to calculate the correct stress and strain conditions. In this study, we used different sources for material data input for our FE simulations. We compared simulated output versus the experimental results using a stent-like structure after various heat treatments. We used NiTi literature data, tensile data from raw as-supplied NiTi tubes as well as tensile and compression data from microtest samples which underwent stent-like processing for our FEA modeling. A FEA model of the diamond shape (DS) was constructed to quantify and visualize the force and motion response after applying different loading conditions similar to physiologic stress and strain. Force-deflection response of the virtual model was compared against the differently processed DS specimen. All results were put into a matrix in order to evaluate the quality of the different inputs for the FEA. The goal of this study was to demonstrate the importance of selecting and applying the correct material parameter inputs and to further show the importance of not just using given parameter, but also calibrating the values to get accurate results of FE simulations. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A Comparison of Different Nitinol Material Data Sources for Finite Element Analysis.
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  Data: Nitinol (NiTi) is widely used for minimal invasive vascular implants due to its superelastic material behavior. Today computerized finite element analysis (FEA) modeling is a standard tool for the development of medical devices and an essential part of the product design and device approval process (X. Gong and A.R. Pelton, ABAQUS Analysis on Nitinol Medical Applications, Proceedings of ABAQUS User's Conference, New Port, Rhode Island, , p 1; N. Rebelo and M. Perry, Finite Element Analysis for the Design of Nitinol Medical Devices, Min. Invas. Ther. Allied Technol., , 9(2), p 75). Quality of simulation depends on a multitude of parameters such as the mathematical material model and FE model generation (meshing). As such, a superior material data input is crucial in order to calculate the correct stress and strain conditions. In this study, we used different sources for material data input for our FE simulations. We compared simulated output versus the experimental results using a stent-like structure after various heat treatments. We used NiTi literature data, tensile data from raw as-supplied NiTi tubes as well as tensile and compression data from microtest samples which underwent stent-like processing for our FEA modeling. A FEA model of the diamond shape (DS) was constructed to quantify and visualize the force and motion response after applying different loading conditions similar to physiologic stress and strain. Force-deflection response of the virtual model was compared against the differently processed DS specimen. All results were put into a matrix in order to evaluate the quality of the different inputs for the FEA. The goal of this study was to demonstrate the importance of selecting and applying the correct material parameter inputs and to further show the importance of not just using given parameter, but also calibrating the values to get accurate results of FE simulations. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11665-011-9910-7
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 737
    Subjects:
      – SubjectFull: Nickel-titanium alloys
        Type: general
      – SubjectFull: Finite element method data processing
        Type: general
      – SubjectFull: Artificial implants
        Type: general
      – SubjectFull: Nondestructive testing
        Type: general
      – SubjectFull: Mathematical models
        Type: general
      – SubjectFull: Simulation methods & models
        Type: general
      – SubjectFull: Product design
        Type: general
      – SubjectFull: Heat treatment of metals
        Type: general
    Titles:
      – TitleFull: A Comparison of Different Nitinol Material Data Sources for Finite Element Analysis.
        Type: main
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            NameFull: Nagl, Frank
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            NameFull: Siekmeyer, Gerd
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            NameFull: Quellmalz, Michael
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              M: 06
              Text: Jun2011
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              Y: 2011
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            – TitleFull: Journal of Materials Engineering & Performance
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