Dynamic rheology of viscoelastic tubes

Article type: Research Article

Authors: Collins, R.^{a; b} | Kivity, Y.^{a; b}

Affiliations: [a] Université de Technoloeie de Compiègne, Department of Biological Engineering, BP 233, 60206 Compiègne, France | [b] Technion, Israel Institute of Technology, Haifa Israel

Note: [] Accepted by: Editor R.D. Harkness

Abstract: Shock-like waves are generated in fluid-filled silastic tubes, and their amplitudes recorded as a function of position and time. A simple theory is formulated for the steady-state “shock-structure”, based on a mathematical analogy with gas-dynamic shock waves. Comparison with the experimental results provides a general method for the evaluation of the dynamic rheology of viscoelastic biological vessels. The existence of shock-like propagation is seen to depend upon the form of the input pressure signal and most critically upon its maximum rate of rise dp/dt.

DOI: 10.3233/BIR-1978-153-406

Journal: Biorheology, vol. 15, no. 3-4, pp. 173-179, 1978