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Dynamic analysis of the aortic valve using a finite element model

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Presentation on theme: "Dynamic analysis of the aortic valve using a finite element model"— Presentation transcript:

1 Dynamic analysis of the aortic valve using a finite element model
Ramakrishna Gnyaneshwar, BTech, Ramarathnam Krishna Kumar, PhD, Komarakshi R Balakrishnan, MBBS, MS  The Annals of Thoracic Surgery  Volume 73, Issue 4, Pages (April 2002) DOI: /S (01)

2 Fig 1 (A) Finite element model of the aortic valve with sinuses. (B) Cut section of the finite element model showing the leaflet in open position. The Annals of Thoracic Surgery  , DOI: ( /S (01) )

3 Fig 2 Pressure boundary condition with time. a = aortic pressure; b = left ventricular pressure; c = leaflet pressure. The Annals of Thoracic Surgery  , DOI: ( /S (01) )

4 Fig 3 Positon of three locations (nodes A, B, and C) in the model.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

5 Fig 4 Displacement pattern of nodes A and B with time.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

6 Fig 5 Radial deformation at location C with time.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

7 Fig 6 Leaflet deformation due to the geometry of the aortic system.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

8 Fig 7 Deformation of the leaflet after 0.409 seconds.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

9 Fig 8 Deformation of the leaflet after 0.444 seconds.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

10 Fig 9 Locations in the leaflet for monitoring stress.
The Annals of Thoracic Surgery  , DOI: ( /S (01) )

11 Fig 10 (A through H) von-Mises stress variation at locations A through H (shown in Fig 9), respectively. The Annals of Thoracic Surgery  , DOI: ( /S (01) )

12 Fig 11 von-Mises stress contours at (A) seconds, (B) seconds, and (C) seconds. The Annals of Thoracic Surgery  , DOI: ( /S (01) )

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