braking

The fields of applications and values (processes) of external impacts (power and kinematic) are defined while developing dynamic models which adequately describe and specify calculation schemes of the analysis of loads arising in load lifting machines/cranes at their start up/braking. The numerical and analytical method of solving proper differential model equations is based on the analysis of the phase likeness of the systems movement (of both the classical and highest orders) is proposed.

The specified calculations for dynamic crane steel structures loadings of bridge cranes in processes of their start-up/braking are presented. Possible wave formations in a bridge crane beam when cargo truck driving on it are taken into consideration; they result into the emergence of (wave) resistance power.