The complex influence of aluminium aging on the dynamic response of the thin-walled AL-6060 alloy profile

• Multi-analysis approach (static buckling, modal, dynamic buckling).
• Dynamic buckling analysis of thin-walled profiles.
• Thermal treatment influence on the dynamic buckling load.
• Nonlinear finite element analysis of transient phenomenon.

This paper presents the results of dynamic stability analysis of pre-aged aluminium profiles subjected to dynamic impulse loading. As an example a rectangular compressing pulse is considered. The analysis deals with the open cross-section ‘channel profile’ and its section modifications where the material properties obtained in experimental testing are employed. Instead of static buckling to determine a critical load, usage of a criterion is necessary. Thus the application of dynamic buckling criterion is commented on according to presented results of computations. The influence of material aging on dynamic buckling load level is argued.