ps_5 - Massachusetts Institute of Technology Biological...

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Massachusetts Institute of Technology Biological Engineering Division Department of Mechanical Engineering Department of Electrical Engineering and Computer Science BEH.410/2.798J/6.524J/10.539J Molecular, Cellular & Tissue Biomechanics, Spring 2003 Problem Set # 5 (Viscoelastic materials) Issued: Mon., 3/17/03 Due: Mon., 4/7/03 READING ASSIGNMENT: Fung, Biomechanics Ferry, Viscoelastic Properties of Polymers Carew et al, “Quasi-Linear Viscoelastic Theory Apllied to Aortic Leaflets,” (ASME) J Biomech Eng, 1999. PROBLEMS: Do problems 1-3 attached.
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Maxwell Material Experiments have been performed in which a magnetic bead is attached to a cell membrane via the fibronectin-integrin bond, and a force is applied via a time-varying magnetic field. The graph below shows the result of applying force to a bead attached to cell receptors, expressed in terms of the bead displacement as a function of time (“Experimental Data”). The force increases linearly with time according to: F(t) = 250 . t pN where t is expressed in seconds. Fig. 1. (Karcher et al., 2003)
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ps_5 - Massachusetts Institute of Technology Biological...

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