The Viscoplastic Effect in the Heat–Treated, Thin–Walled AL–6060 Alloy Profiles Subjected to Compressive Axial Impact.
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Wydawca
Lodz University of Technology. Faculty of Mechanical Engineering. Department Division of Dynamics.
Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn.
Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn.
Abstrakt
This paper will highlight the influence of the strain rate effect occurring during pulse
loading on dynamic stability of aluminium profiles. Current work is the development
of the analysis carried in [1]. The C–channel cross–section beams/columns are made of 6060 T4, T5, T6 and T66 aluminium alloy. The rectangular–shape compressing pulse is analysed. The static material characteristics had been obtained from the experimental tensile tests and afterwards modified for dynamic response according to Perzyna viscoplastic model. The results of the numerical computations are presented whereas the critical load and DLF (Dynamic Load Factor) basing on the selected dynamic buckling criterion is determined.
Opis
Słowa kluczowe
Perzyna model, aluminium aging, thin–walled profiles, dynamic stability analysis, dynamic buckling criterions, model Perzyny, starzenie aluminium, profile cienkościenne, dynamiczne kryterium wyboczenia, dynamiczna analiza stateczności
Cytowanie
Mechanics and Mechanical Engineering Vol. 18, No. 1, 2014, str. 53–71