Blood vessel tissue prestress modeling for vascular fluid-structure interaction simulation

  • Authors:
  • Ming-Chen Hsu;Yuri Bazilevs

  • Affiliations:
  • Department of Structural Engineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0085, La Jolla, CA 92093, USA;Department of Structural Engineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0085, La Jolla, CA 92093, USA

  • Venue:
  • Finite Elements in Analysis and Design
  • Year:
  • 2011

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Abstract

In this paper we present a new strategy for obtaining blood vessel tissue prestress for use in fluid-structure interaction (FSI) analysis of vascular blood flow. The method consists of a simple iterative procedure and is applicable to a large class of vascular geometries. The formulation of the solid problem is modified to account for the tissue prestress by employing an additive decomposition of the second Piola-Kirchhoff stress tensor. Computational results using patient-specific models of cerebral aneurysms indicate that tissue prestress plays an important role in predicting hemodynamic quantities of interest in vascular FSI simulations.