Static and dynamic stability for floating cranes

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Musca, D.G.^1

Dunarea de Jos University of Galati, Engineering and Agronomy Faculty in Braila, Research Center for Mechanics of Machines and Technological Equipment, Calea Calarasilor 29, Braila

810017, Romania^1

关键词: Balance positions;    Dynamic process;    Maximum amplitude;    Overturning moment;    Periodic motion;    Static balance;    Static stability;    Vertical direction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/8/082015/pdf
DOI  :  10.1088/1757-899X/400/8/082015

来源: IOP

【 摘 要 】

Dynamic processes have been considered in this research paperwork, coming up when static balance of the crane is disturbed and behave as some periodic or non-periodic motions on the way to another balance position. Most often, these motions are oscillating non-linear and attenuated and concern the time of transitory mode, period and maximum amplitude of the oscillations. For a crane, the most dangerous disturbance of static balance is caused by sudden loose of the load. The crane subject to analysis has no other connection to environment that by means of non-linear yield seats only on vertical direction. Static stability in idle or under load condition is no longer considered by checking whether the stabilization moment is greater than the overturning moment both in idle and under load conditions like for on-shore crane fixed on rigid seats. Dynamic processes come up when static balance of the crane is disturbed and behave like periodical or non-periodic motions on their way to another balance position. This process has generic name of transitory mode. For a crane, the most dangerous disturbance of static balance is caused by sudden loose of the load.