Numerical modeling of wave propagation and interaction in bars

• Autorzy: Jankowiak T. , Klepaczko J. , Łodygowski T.
• Języki publikacji: EN

Abstrakty

EN

In the first part, the paper presents analytical solution of symmetric longitudinal impact of a semi-infinite circular bar. In the second part the Maple code is used in order to solve the differential equations, derived and solved by Skalak [1]. Based on this analytical solution, a verification is performed by Finite Element code. The calibration of parameters like the artificial viscosity and the mesh size is done. The initial FE calibration is used, together with cumulative fracture criterion, to verify the laboratory test results presented by Klepaczko [2,3,4,7]. The finite element solution is focused on the new experimental technique to test semi-brittle materials in dynamic tension via spalling. The technique which is based on Hopkinson pressure bar has been developed in LPMM-Metz [4].

Słowa kluczowe

EN

wave propagation; wave interaction; Hopkinson bar; finite element method; cumulative fracture criterion

PL

fala; propagacja fal; pręt Hopkinsona; metoda elementów skończonych; pęknięcie

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Foundations of Civil and Environmental Engineering
• Rocznik: 2006
• Tom: No. 7
• Strony: 187--199
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Jankowiak T.

autor

Klepaczko J.

autor

Łodygowski T.

• Poznan University of Technology, Institute of Structural Engineering (ISE), ul. Piotrowo 5, 60-975 Poznan, Poland Tel.: [phone] fax:-.,

Bibliografia

• 1. Skalak R., Longitudinal impact of a semi-infinite circular clastic bar, Journal of applicd mechanics, 24 (1957) 59-64.
• 2. Klepaczko J.R., Brara A., Ań cxperitnental method for dynamie tensile test-ing of concrete by spalling, International Journal of Impact Engineering, 25 (2001)387-409.
• 3. Brara A., Camborde F., Klepaczko J.R., Mariotti C., Experimental and nu-merical study of concrete at high strain rates in Icnsion, Mechanics of Materials, 33 (2001) 33-45.
• 4. Brara A., Klepaczko J.R., Experimental characterization of concrete in dynamie tension, Mechanics of Materials, 38 (2006) 253-267.
• 5. Klósak M., Łodygowski T. Klepaczko J.R., Remarks on numerical estimation of the critical velocity in shear, Computer Assisted Mechanics and Engineering Sciences, 8 (2001) 579-593.
• 6. Jankowiak T., Łodygowski T., Numerical modeling of fracture in brittle materiał under impact loading, Yibrations in Physical Systems, 22 (2006) 143-148.
• 7. Klepaczko J.R., Dynamie crack initiation, some experimental methods and modeling, in: Crack Dynamics in Metallic Materials, Springer Yerlag, Wien-New York, (1990)255-453.
• 8. Jankowiak T., Klepaczko J., Łodygowski T., Application of the cumulative fracture criterion for concrete under impact loading (in preparation).