ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Biological materials can be regarded as composites with spheroidal and fibre-likeinclusions, representing cells and collagen fibres, respectively. The orientation and arrangement ofthe inclusions in a biological tissue is crucial to the determination of the mechanical properties ofthe material. Furthermore, the reorientation and rearrangement of the inclusions due to thedeformation and external forces is of primary interest when dealing with growth and remodelling.We propose to look at the presence of inclusions as a source of internal hyperstaticity: when thematerial undergoes deformation, a generic inclusion is drifted by the deformation, but at the sametime it “feels” the stress field and tends to carry a portion of stress proportional to its stiffnessrelative to that of the surrounding matrix. With this assumption, we can extend the classical “drift”evolution law for the unit vector field, in order to take the hyperstaticity into account. This methodmight be used in the description of remodelling in disordered media, such as biological tissues, andmay be extended to investigate the reorientation of preferred directions of micro-structural elementsin media described with a continuum approach
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.137.pdf
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