Viscoelastic-Viscoplastic Modelling of the Scratch Response of PMMA
Joint Authors
Bergheau, Jean-Michel
Aleksy, N.
Kermouche, G.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-28
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
This paper aims at understanding how to model the time-dependent behavior of PMMA during a scratch loading at a constant speed and at middle strain levels.
A brief experimental study is first presented, consisting of the analysis of microscratches carried out at various scratching velocities and normal loads.
The loading conditions have been chosen in such a way that neither (visco)elasticity nor (visco)plasticity of the PMMA may be neglected a priori.
The main analyzed parameter is the tip penetration depth measured during the steady state.
Then, a finite element model is used to investigate the potential of classical elastic-viscoplastic constitutive models to reproduce these experimental results.
It is mainly shown that these models lead to unsatisfying results.
More specifically, it is pointed out here that the time-independent Young modulus used in such models is not suitable.
To take into account this feature, a viscoelastic-viscoplastic model based on the connection in series of a viscoelastic part with a viscoplastic part is proposed.
It is shown that it leads to more acceptable results, which points out the importance of viscoelasticity in the scratch behavior of solid polymers.
American Psychological Association (APA)
Kermouche, G.& Aleksy, N.& Bergheau, Jean-Michel. 2013. Viscoelastic-Viscoplastic Modelling of the Scratch Response of PMMA. Advances in Materials Science and Engineering،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-460693
Modern Language Association (MLA)
Kermouche, G.…[et al.]. Viscoelastic-Viscoplastic Modelling of the Scratch Response of PMMA. Advances in Materials Science and Engineering No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-460693
American Medical Association (AMA)
Kermouche, G.& Aleksy, N.& Bergheau, Jean-Michel. Viscoelastic-Viscoplastic Modelling of the Scratch Response of PMMA. Advances in Materials Science and Engineering. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-460693
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-460693