Abstract
The gantry cranes are currently one of the most popular devices to transporting loads. They can be used in many industries. This study focuses on the numerical analysis of only the portable gantry crane. The mathematical and numerical model of mechanical phenomena in the gantry crane beam was presented in this paper. This problem was solved by using of the Finite Element Method (FEM). The analysis was made to the cross-section of gantry crane beam which was the I-beam or box beam. The numerical simulations are limited to numerical analysis of strength of the gantry crane beam which was loaded by the motion of the load force along its length. As a result of the calculations, the stresses and displacements of the structure of gantry crane were obtained. The influence of beam shape change and changing the loading force position on generate the equivalent stress in the crane beam was evaluated. The research performed, which allows the estimated of the stress state, pointing out the critical areas and values, were made in order to increase the strength of the structure of the gantry crane.
Highlights
Manipulation of material is an essential component of any production and distribution system
The mathematical model and numerical simulations of the mechanical phenomena in the gantry crane beam are presented in this paper
The maximum von Mises equivalent stress in the middle of the gantry crane beam length whose cross-section is Ibeam amounted to 99.4 MN/m2 (Fig. 3), in the box-section beam was 112.4 MN/m2 (Fig. 7) and in the thick-walled box beam was equal to 92.7 MN/m2 (Fig. 10)
Summary
Manipulation of material is an essential component of any production and distribution system. The important mechanical elements of these systems are different cranes, which are used to lifting and lowering a load and moving it horizontally. They are mainly used in car factories, heavy industry and shipyards. The main component of crane is girder beam which transfers the load on its other elements it is tested for strength. The problems of stress concentration and the extreme deformations localization will be discussed For this purpose, the numerical simulations were performed to get the distributions of stresses, strains and displacements in the gantry crane beam. If they are smaller than the permissible stresses, it is supposed that the construction is safe
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