Autorotation; dynamic instability; random stability; tower crane
Abstract :
[en] The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been investigated through numerous experiments. This work presents a simple numerical model of a crane in a turbulent wind field, in order to support the available experimental approaches. First, the problem is defined with the necessary assumptions of the model. Second, the equation of motion is developed and wind characteristics are detailed. This equation presents several specificities requiring dedicated resolution methods. In a first analysis, the crane model is simplified in order to approach the behavior of the parametric pendulum and enable a general comparison of both responses. Indeed, the parametric pendulum is a well-known problem that is already widely described in the literature. In a second step, the response of the crane is studied under a realistic stochastic wind load with the full model.
Disciplines :
Civil engineering
Author, co-author :
Vanvinckenroye, Hélène ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Denoël, Vincent ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Language :
English
Title :
Monte Carlo Simulations of Autorotative Dynamics of a Simple Tower Crane Model
Publication date :
2015
Event name :
14th International Conference on Wind Engineering
Event place :
Porte Allegre, Brazil
Event date :
21-26 June 2015
Audience :
International
Main work title :
Proceedings of the 14th International Conference on Wind Engineering
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