2016

  • B. W. Walter, J-P. Pelteret, J. Kaschta, D. Schubert, and P. Steinmann, “Magnetorheological elastomers in large amplitude oscillatory shear,” in Proceedings of the 12$^{th}$ Fall Rubber Colloquium, 2016.
    [Bibtex]
    @InProceedings{Walter2016d,
    author = {Walter, B. W. and Pelteret, J-P. and Kaschta, J. and Schubert, D.. and Steinmann, P.},
    title = {Magnetorheological elastomers in large amplitude oscillatory shear},
    booktitle = {Proceedings of the 12$^{th}$ Fall Rubber Colloquium},
    year = {2016},
    owner = {Jean-Paul Pelteret},
    timestamp = {2016.09.28},
    }

2014

  • B. Walter, P. Saxena, J-P. V. Pelteret, J. Kaschta, D. Schubert, and P. Steinmann, “On The Preparation, Characterisation, Modelling And Simulation Of Magneto-Sensitive Elastomers,” in Proceedings of the Second Seminar on the Mechanics of Multifunctional Materials, Bad Honnef, Germany, 2014, pp. 103-106.
    [Bibtex]
    @InProceedings{Walter2014a,
    Title = {On The Preparation, Characterisation, Modelling And Simulation Of Magneto-Sensitive Elastomers},
    Author = {Walter, B. and Saxena, P. and Pelteret, J-P. V. and Kaschta, J. and Schubert, D. and Steinmann, P.},
    Booktitle = {Proceedings of the Second Seminar on the Mechanics of Multifunctional Materials},
    Year = {2014},
    Address = {Bad Honnef, Germany},
    Editor = {Schroder, J. and Lupascu, D. C. and Keip, M.-A. and Brands D.},
    Month = {May},
    Note = {ISBN: 978-3-9809679-8-3},
    Pages = {103--106},
    Volume = {12},
    Abstract = {Magneto-sensitive elastomers are smart materials that change their mechanical properties under the influence of a magnetic field. The methodof preparation and characterisa-tion of MSEs by rheological experiments and imaging techniques are presented. Data, obtained through rheological experiments, is used to validate a material model that couples the theories of viscoelasticity and magnetoelasticity. Using model parameters received by fitting the relax-ation tests and shear experiments, the behaviour of MSEs in dynamic mechanical experiments under various experimental conditions can be successfully predicted. The material model is validated for small deformations and magnetic fields up to 0.3 T and has been implemented within an in-house finite element code.},
    Owner = {Jean-Paul Pelteret},
    Timestamp = {2015.10.11}
    }

2011

  • J-P. V. Pelteret and B. D. Reddy, “Computational model of tissues in the human upper airway,” in 2$^{nd}$ International Conference on Computational & Mathematical Biomedical Engineering, Washington DC, USA, 2011, pp. 347-350.
    [Bibtex]
    @InProceedings{Pelteret2011a,
    author = {Pelteret, J-P. V. and Reddy, B. D.},
    title = {Computational model of tissues in the human upper airway},
    booktitle = {2$^{nd}$ International Conference on Computational \& Mathematical Biomedical Engineering},
    year = {2011},
    editor = {Nithiarasu, P. and L\"{o}hner, R. and van Loon, R. and Sazonov, I. and Xie, X.},
    pages = {347--350},
    address = {Washington DC, USA},
    month = {April},
    note = {ISBN: 978-0-9562914-1-7},
    owner = {Jean-Paul Pelteret},
    timestamp = {2017.05.01},
    url = {http://www.compbiomed.net/getfile.php?type=1/site_documents&id=cmbe2011.pdf},
    }

2010

  • Y. Kajee, J-P. V. Pelteret, and B. D. Reddy, “Biomechanics of the human tongue,” in Proceedings of the 7th South African conference on computational mechanics, 2010.
    [Bibtex]
    @InProceedings{Kajee2010a,
    author = {Kajee, Y. and Pelteret, J-P. V. and Reddy, B. D.},
    title = {Biomechanics of the human tongue},
    booktitle = {Proceedings of the 7th South African conference on computational mechanics},
    year = {2010},
    editor = {Kok, S. and Wilke, D.N. and Inglis, H.M. and Sellers, E.},
    abstract = {The human tongue is composed mainly of skeletal-muscle tissue, and has a complex architecture. Its anatomy is characterised by interweaving, yet distinct muscle groups. It is a significant contributor to the phenomenon of Obstructive Sleep Apnoea Syndrome (OSAS). OSAS is a pathological condition defined as the partial or complete closing of any part of the human up- per airway (HUA) during sleep. OSAS affects about 2\% of women, and 4\% of men, according to USA survey figures [1, 2]. Patients with OSAS experience various respiratory problems, an increase in the risk of heart disease, a significant decrease in productivity and an increase in motor-vehicle accidents [3]. The aim of this work is to report on a constitutive model of the human tongue, and to demon- strate its use in computational simulations for OSA research. A realistic model of the constitution of the tongue and computational simulations are also important in areas such as linguistics and speech therapy [4]. The geometry of the tongue and each muscle group of the tongue is captured from the Visible Human Project (VHP) dataset [5] using Mimics [6]. This tongue geometry is illustrated in figure 1.
    2. Various image processing tools available in Mimics, such as image segmentation, region- growing and volume generation were used to form the three-dimensional model of the tongue geometry. Muscle fibre orientations were extracted from the same dataset, also using Mimics. The muscle model presented here is based on the Hill three-element model for representation of the constituent parts of muscle fibres [7]. This Hill-type muscle material model is developed at the macroscale level (in the range of 100 - 1000 microns). The model also draws from recent work in muscle modelling by Martins et. al. [8, 9] and involves the linearization of the consti- tutive relations presented within this literature. The model is implemented in an Abaqus user element subroutine (UEL) [10]. The mechanics of the model are limited to quasi-static, small-strain, linear-elastic behaviour, and the governing equations were suitably linearised. The main focus of this work is on the material directionality, and muscle activation. Thus, working with a small-strain constitutive relation would be a necessary step at this stage of the development of the model. Future work would take large-strain theory into account, which is more suited to biological materials. The transversely isotropic behaviour of the muscle tissue is accounted for, as well as the influence of muscle activation. The body position of the patient during an apnoeic episode under the influence of gravity is also accounted for. The behaviour of the model is illustrated in a number of benchmark tests, and computational examples.},
    owner = {Jean-Paul Pelteret},
    timestamp = {2015.10.11}
    }