Mróz, Andrzej2017-09-072017-09-072014Mechanics and Mechanical Engineering Vol. 18, No. 1, 2014, str. 53–711428-1511http://hdl.handle.net/11652/1706This 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.enPerzyna modelaluminium agingthin–walled profilesdynamic stability analysisdynamic buckling criterionsmodel Perzynystarzenie aluminiumprofile cienkościennedynamiczne kryterium wyboczeniadynamiczna analiza statecznościArtykuł