A constitutive material model for a commercial PMMA bone cement using a combination of nano-indentation test and finite element analysis

To obtain accurate mechanical properties of an orthopedic Polymethylmethacrylate (PMMA-based) bone cement, nanomechanical testing was performed. Due to visoelastic characteristics of this polymer-like bone cement, the mechanical properties cannot be identified using conventional indentation methods....

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Veröffentlicht in:Polymer testing 2017-05, Vol.59, p.328-335
Hauptverfasser: Shirazi, H. Asgharzadeh, Mirmohammadi, S.A., Shaali, M., Asnafi, A., Ayatollahi, M.R.
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container_end_page 335
container_issue
container_start_page 328
container_title Polymer testing
container_volume 59
creator Shirazi, H. Asgharzadeh
Mirmohammadi, S.A.
Shaali, M.
Asnafi, A.
Ayatollahi, M.R.
description To obtain accurate mechanical properties of an orthopedic Polymethylmethacrylate (PMMA-based) bone cement, nanomechanical testing was performed. Due to visoelastic characteristics of this polymer-like bone cement, the mechanical properties cannot be identified using conventional indentation methods. A well-known two-layer viscoplasticity model was selected and simulated in a finite element solver. A complete analogical study between the results of the finite element simulation and the experimental data was made to reach the best optimized parameters for the selected model. It is shown that the proposed model can be used to obtain the constitutive material relationship for polymeric materials.
doi_str_mv 10.1016/j.polymertesting.2017.01.031
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; ScienceDirect Journals (5 years ago - present)
subjects Bio-inspiration
Bone cement
Bones
Cement
Cement constituents
Computer simulation
Finite element analysis
Finite element method
Identification methods
Indentation
Mechanical properties
Nano-indentation test
Orthopedics
Polymers
Polymethyl methacrylate
Studies
Viscoplasticity
title A constitutive material model for a commercial PMMA bone cement using a combination of nano-indentation test and finite element analysis
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