Identification of the elastic modulus of polymeric materials by using thin-walled cylindrical specimens

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Identification of the elastic modulus of polymeric materials by using thin-walled cylindrical specimens

Gluhih, S.; Kovalov, A.; Tishkunov, A.; Akishin, P.; Chate, A.; Auzins, E.; Kalnins, M.

Mechanics of composite materials, 03/2012, Volume: 48, Issue: 1

Journal Article

A method for determining the elastic modulus of polymeric materials from deformation diagrams of thin-walled circular cylindrical shells in compression and tension in the region of geometrical nonlinearity has been elaborated. A numerical solution is found by the finite-element method (ANSYS.) The existence of a unified deformation diagram in generalized coordinates is established, from which the elastic modulus is determined. To validate the method, the eigenfrequencies of cylindrical specimens were found experimentally. The results obtained are compared with FEM calculations.

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