FINITE ELEMENT APPROACH TO MODELLING OF THE STIFFNESS OF THE PRINCIPAL BEAM ANGULAR CONNECTIONS OF BRIDGE CRANE

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  • TITLE: FINITE ELEMENT APPROACH TO MODELLING OF THE STIFFNESS OF THE PRINCIPAL BEAM ANGULAR CONNECTIONS OF BRIDGE CRANE
  • AUTHOR(S): V. P. Dunchev
  • ABSTRACT: This article presents a new model of the principal beam of bridge crane – two-supported beam having angular elastic coupling of the end cross-sections. These angular connections restrict the rotations of the end cross-sections when the beam is subjected to bending in principal inertia plane. The stiffness of these connections has been modeled by means of finite element approach and planned numerical experiment. The governing factors has been chosen as follows: the principal beam length, the moment of inertia of the cross-section, the crane base (the front beam length), the moment of inertia of torsion of the front beam cross-section. A regressional analysis of the obtained experimental outcomes has been carried out. By means of this analysis the influence of the governing factors on the angular connections stiffness has been established. It is proved that the geometrical parameters of the front beams have decisive influence on the stiffness modeled. It is advisable in the algorithm of design of the bridge crane metal structure the principal beam to be modeled as two-supported beam with angular elastic connections of the end cross-sections.
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