A simple method of incorporating the effect of the Uniform Stress Hypothesis in arterial wall stress computations

• Autorzy: Joldes G. R. , Noble C. , Polzer S. , Taylor Z. A. , Wittek A. , Miller K.

Identyfikatory

DOI

10.5277/ABB-01143-2018-03

• Języki publikacji: EN

Abstrakty

EN

Residual stress has a great influence on the mechanical behaviour of arterial wall. Numerous research groups used the Uniform Stress Hypothesis to allow the inclusion of the effects of residual stress when computing stress distributions in the arterial wall. Nevertheless, the available methods used for this purpose are very expensive, due to their iterative nature. In this paper we present a new method for including the effects of residual stress on the computed stress distribution in the arterial wall. Methods: The new method using the Uniform Stress Hypothesis enables computing the effect of residual stress by averaging stresses across the thickness of the arterial wall. Results: Being a post-processing method for the computed stress distributions, the proposed method is computationally inexpensive and, thus, better suited for clinical applications than the previously used ones. Conclusions: The resulting stress distributions and values obtained using the proposed method based on the Uniform Stress Hypothesis are very close to the ones returned by an existing iterative method.

Słowa kluczowe

EN

Uniform Stress Hypothesis; residual stress; finite element method; arterial wall stress

PL

naprężenia własne; metoda elementów skończonych; ściana tętnicy

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2018
• Tom: Vol. 20, no. 3
• Strony: 59--67
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Joldes G. R.

• Intelligent Systems for Medicine Laboratory, The University of Western Australia, Perth Australia

autor

Noble C.

• Centre for Computational Imaging and Simulation Technologies in Biomedicine, Institute for in silico Medicine, Department of Mechanical Engineering, The University of Sheffield, Sheffield, UK

autor

Polzer S.

• Department of Applied Mechanics, VSB-Technical University Ostrava, Ostrava, Czech Republic

autor

Taylor Z. A.

• Centre for Computational Imaging and Simulation Technologies in Biomedicine, Institute for in silico Medicine, Department of Mechanical Engineering, The University of Sheffield, Sheffield, UK

autor

Wittek A.

• Intelligent Systems for Medicine Laboratory, The University of Western Australia, Perth Australia

autor

Miller K.

• Intelligent Systems for Medicine Laboratory, The University of Western Australia, Perth Australia
• School of Engineering, Cardiff University, Cardiff, UK

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).