Strain analysis of flexing blood pump diaphragms
| Autor: | S. A. Yazdani, S. K. Kesavan |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
business.industry
General Engineering Models Cardiovascular Strain (injury) Diaphragm (mechanical device) Diaphragm pump General Medicine Structural engineering Equipment Design Deformation (meteorology) Elasticity (physics) musculoskeletal system medicine.disease Elastomer Elasticity Blood pump Tensile Strength medicine Humans Heart-Assist Devices Rubber Stress Mechanical business Mathematics |
| Zdroj: | Journal of applied biomaterials : an official journal of the Society for Biomaterials. 3(4) |
| ISSN: | 1045-4861 |
| Popis: | Blood pumps usually use elastomer diaphragms that undergo repeated small-strain flexing (deformation). The stresses and strains that develop in the mechanically actuated diaphragms dictate the useful life and fluid-solid interactions of the diaphragm. A knowledge of these stresses and strains is essential for proper design of the pump's elastomer diaphragm. A nonlinear axisymmetric finite-element stress-strain analysis has been carried out on a Hexsyn rubber diaphragm used in a blood pump to illustrate a finite-element modeling technique. A situation involving the application of an axial deformation load on the diaphragm has been considered. In particular, the strains developed in a blood pump diaphragm during pumping have been quantified to illustrate the analysis technique. © 1992 John Wiley & Sons, Inc. |
| Databáze: | OpenAIRE |
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