Skip to Main content Skip to Navigation
Journal articles

Wave separation in non-uniform Hopkinson bars using redundant measurements

Abstract : In this paper we generalize the BCGO-wave separation method (Bussac, 2002, J. Phys. Mech. Solids, 50, 321-349) based on the maximum of likelihood principle to non-uniform rods. To achieve this aim, the force and the particle velocity at any cross-section are expressed as functions of the force and the particle velocity at the origin instead of the expressing them as function of the forward and downward waves. Due to this generalisation, one can perform long duration and medium strain-rate (1-100/s) tests using Hopkinson bars not only in the case of compression loadings but also for example dynamic bending and high-temperature tests. The new method is checked numerically on a stepped elastic bar. It shows good behaviour against noise.
Complete list of metadata

Cited literature [9 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01885588
Contributor : Mathias Legrand Connect in order to contact the contributor
Submitted on : Tuesday, October 2, 2018 - 10:01:38 AM
Last modification on : Tuesday, September 21, 2021 - 4:06:06 PM
Long-term archiving on: : Thursday, January 3, 2019 - 1:52:14 PM

File

Othman2006.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Ramzi Othman. Wave separation in non-uniform Hopkinson bars using redundant measurements. Journal de Physique IV Proceedings, EDP Sciences, 2006, 134, pp.571 - 576. ⟨10.1051/jp4:2006134088⟩. ⟨hal-01885588⟩

Share

Metrics

Record views

337

Files downloads

274