Numerical Analysis Of Fluid-Structure Interaction For Wind-induced Response Of Single Beam Gantry Crane

Gantry crane plays an irreplaceable role in producting and handling of large equipments. As the rise of the production efficiency and the emergence of the large loadings, the installations of equipments will need large span gantry cranes.With the increase of the gantry cranes' span and height, the pressure limits for rail wheels and the needs to reduce the cost, the gantry cranes gets more gentle. Under the coastal extreme wind load, the gantry cranes are easy to cause potential risk. Traditional loading patterns take wind load as static load, it is not applicable for gantry cranes, wind vibration should also be considered. The work environments of gantry cranes are usually windy, the impact of wind is even more prominent.Numerical simulation of Wind-induced dynamic response of Fluid-Structure Interaction (FSI) is performed by ADINA in this paper. Structural dynamic equation is described by Lagrangian method. Viscous incompressible fluid is assumed in this paper and ALE (Arbitrary Lagrangian-Eulerian) method is used to describe Fluid dynamic equation. At the same time, stable finite element solution techniques of Flow-Condition-Based Interpolation three-dimensional element is used to avoid numerical instability.First of all, numerical simulation of two-dimensional rigid main beam cross-section of the single beam gantry crane is carried out with five turbulence models. From the results, we can see the characteristics of flow passing and Vortex shedding, and coefficient of wind pressure distribution of main beam can be achieved through theoretical formulations. Analysis showed that standardκ-εturbulence model is more suitable for the numerical simulation of gantry crane. Further analysis of gantry crane's main beam is carried out with standard k-εmodel.Analysis of three-dimensional models under in-service wind speed, out-of-service wind speed and typhoon wind speed is carried out to study the wind-induced vibration response of gantry crane. Elastic model is established, from the results of which we can achieve the coefficient of wind pressure distribution of main beam under the three wind speeds and achieve the wind vibration coefficient by calculating the variance of displacement, which provides reference for designers.