# Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science

TRANSIENT SIMULATION OF IMPULSE WIND EFFECT ON A TALL SHIPYARD FRAME STRUCTURE

DOI: 10.5937/jaes15-12935
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions.

Volume 15 article 429 pages: 192 - 202

Public Utility Company Mediana, Nis, Serbia

Miomir Jovanovic
University of Nis, Faculty of Mechanical Engineering, Nis, Serbia

This paper presents the importance of a dynamically checked design of the shipbuilding portal rotating crane geometry regarding wind load. The dynamic character of wind load is mathematically introduced by a harmonic function of excitation and logarithmic wind speed profile. Structural analysis on the nonlinear model of the crane is carried out using the finite element method. The dissipation function is described by using an adequate model of structural damping. Combining the tracking and transformation methods, the eigenvalues of the FEM model of the observed structure were extracted. This research provides a faithful mechanical model of the crane for transient analysis in which structural elasticity is verified on the real structure. Through several case studies, the paper indicates a greater danger of a multi-wave wind gust at the steady state of wind speeds statistically recorded in relation to a single-wave wind gust at the extremely recorded speed. Based on the conducted dynamic simulations of wind action a new design criterion is suggested – the conditional quotient of structural geometry.

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