ABSTRACT
In the short paper was given concise summary, of tested methods and solutions. Also, were pointed a few more important references. Now, are quoted next more essential the author publications and the most interesting – non-conventional theory applications. So, are pointed tasks for critical states (CrS) of homogenous or composite bars (prismatic – full or thin-walled) with cross-sections (CSs) open, closed with e.g. one or three closed circuits. Quoted below solutions indicates on rightness of the present author thesis about multi-parametrical character of instability of structures (1997b). It was enough confirmed, that CrS can occur under single or combined external loading, applied in static or dynamic manner, as e.g. mass travelling along of bridge. So, the Uniform Criterion (UC) formulated by Obrębski, play key-part in analysis of stability and dynamical stability (DS) of any structures. Some more attention is here devoted just for dynamics of bridges. New non-standard graphical interpretations of calculated CrS are presented, too.
