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FE assessment of an experiment employed for analysis of the transient stress energy flux trough spiral slots in axially impacted cylindrical tube
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SYSNO ASEP 0338871 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title FE assessment of an experiment employed for analysis of the transient stress energy flux trough spiral slots in axially impacted cylindrical tube Author(s) Okrouhlík, Miloslav (UT-L) RID
Pták, Svatopluk (UT-L) RID
Lundberg, B. (SE)
Valdek, U. (SE)Source Title Strojnický časopis - ISSN 0039-2472
Roč. 60, č. 4 (2009), s. 181-209Number of pages 29 s. Language eng - English Country SK - Slovakia Keywords energy flux ; stress wave propagation ; experiment Subject RIV BI - Acoustics R&D Projects GA106/08/0403 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2010
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