FE assessment of an experiment employed for analysis of the transient stress energy flux trough spiral slots in axially impacted cylindrical tube

0338871 - ÚT 2010 RIV SK eng J - Článek v odborném periodiku
Okrouhlík, Miloslav - Pták, Svatopluk - Lundberg, B. - Valdek, U.
FE assessment of an experiment employed for analysis of the transient stress energy flux trough spiral slots in axially impacted cylindrical tube.
Strojnický časopis. Roč. 60, č. 4 (2009), s. 181-209. ISSN 0039-2472
Grant CEP: GA ČR(CZ) GA106/08/0403
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: energy flux * stress wave propagation * experiment
Kód oboru RIV: BI - Akustika a kmity

The temporal and spatial distribution of the stress wave energy flux in an axially impacted cylindrical tube, whose middle part contains four spiral slots, is studied experimentally and numerically. The high-speed recording of transient surface strains was used in the experiment, while the 3D finite element treatment was employed for the numerical analysis. The aim of the paper is to ascertain how reliable is the energy assessment based on transient recordings of surface strains and on subsequent 1D wave theory reasoning. The presented paper quantitatively determines how much of the impact energy, which is predominantly of axial (longitudinal) nature, is transferred into torsional (or shear) energy mode as well as to other energy modes not seen by the experiment.
Trvalý link: http://hdl.handle.net/11104/0182531