The aim of this study was to characterise the bulk modulus properties of the upper arm under relaxed and controlled contraction which is defined as 25% of the maximum voluntary contraction. A new testing machine was designed to generate constant load on the upper arm and measure the deformation over time. The machine consists of a device which is effectively a cuff that applies controllable pressure on a 47 mm wide band of the upper arm. Six different loads (10, 20, 30, 40, 50 and 60 kgf) were applied over a period of time of up to a maximum of 120 seconds. The deflection-time curves obtained show strongly non-linear response of the bulk tissue. The non-linearity manifested by these deflection-time curves is in terms of both time- and load-dependency. For each load, the creep behaviour follows an exponential law typical of viscoelastic materials. At low loads (below 30kgf), the creep response increases fairly linearly as the load is increased from 10 kgf to 30 kgf. But at high loads (above 30 kgf), the creep response increases only slightly as the load is increased from 30 kgf to 60 kgf. Beyond a load of 60 kgf, the deflection or creep becomes negligible. This implies that the upper arm has reached the state of incompressibility. The creep behaviour of the upper arm was simulated using four Voigt viscoelastic models in series. The three obvious soft tissues of the upper arm, namely skin, fat and muscle, were modelled in series. The effects of blood vessels and connective tissue were also modelled in series with the other tissues.
Skip Nav Destination
ASME 7th Biennial Conference on Engineering Systems Design and Analysis
July 19–22, 2004
Manchester, England
ISBN:
0-7918-4174-X
PROCEEDINGS PAPER
A Mechanical Model Representation of the In Vivo Behaviour of Bulk Tissue Available to Purchase
Serdar Aritan,
Serdar Aritan
Hacettepe University, Ankara, Turkey
Search for other works by this author on:
S. Olutunde Oyadiji,
S. Olutunde Oyadiji
University of Manchester, Manchester, UK
Search for other works by this author on:
Roger M. Bartlett
Roger M. Bartlett
Sheffield Hallam University, Sheffield, UK
Search for other works by this author on:
Serdar Aritan
Hacettepe University, Ankara, Turkey
S. Olutunde Oyadiji
University of Manchester, Manchester, UK
Roger M. Bartlett
Sheffield Hallam University, Sheffield, UK
Paper No:
ESDA2004-58601, pp. 597-603; 7 pages
Published Online:
November 11, 2008
Citation
Aritan, S, Oyadiji, SO, & Bartlett, RM. "A Mechanical Model Representation of the In Vivo Behaviour of Bulk Tissue." Proceedings of the ASME 7th Biennial Conference on Engineering Systems Design and Analysis. Volume 2. Manchester, England. July 19–22, 2004. pp. 597-603. ASME. https://doi.org/10.1115/ESDA2004-58601
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
Dependence of Mechanical Behavior of the Murine Tail Disc on Regional Material Properties: A Parametric Finite Element Study
J Biomech Eng (December,2005)
Viscoelastic Properties of the Aortic Valve Interstitial Cell
J Biomech Eng (April,2009)
Elasticity Imaging of Polymeric Media
J Biomech Eng (April,2007)
Related Chapters
Polycrystalline Simulations of In-Reactor Deformation of Zircaloy-4 Cladding Tubes during Nominal Operating Conditions
Zirconium in the Nuclear Industry: 20th International Symposium
Advanced PWR Cladding Development through Extensive In-Reactor Testing
Zirconium in the Nuclear Industry: 20th International Symposium
Basic Concepts
Analysis of ASME Boiler, Pressure Vessel, and Nuclear Components in the Creep Range