Analysis of the different main frame of the bridge cranes

The aim of this study is investigate the feasibility of glass fiber reinforced polymer (GFRP) I-beams as the main girder of double girder overhead crane. Two different geometries of GFRP I-beams with simply supported beam configurations and with fix span length are experimentally, numerically and analytically tested under crane motion loads to evaluate their dynamic flexural response.To simulate the dynamic characteristics of overhead crane, trolley and girders have been modeled as solid bodies in SolidWorks (Version 2007) and they have been simplified for better meshing, gravity and carrying loads applied on models as external force, motion loads which calculated with CosmosMotion (Version 2007) applied as inertia forces. Due to the relative low elastic modulus of GFRP profiles, design is often governed by limitations in deflection at service load levels instead of ultimate strength limits. So GFRP overhead crane girder design and calculations of the limit loads depends on beams deflection under dynamic loads, deflection limit is determined as ?span length / 1000?. Overhead crane?s trolley and it?s parts was manufactured with considering DIN15018 except the wheels, for lightening the trolley wheels manufactured with polyamide (PA6). Trolley?s frame manufactured from AISI1020 steel, hoisting drum and steel wire sheave manufactured from AISI1040 steel. E-glass fibers with vinyl ester resin were selected as the material for pultruded profiles which fulfill the requirements made to profiles which are classified as E23 in accordance with EN13706 in this study. Comparisons of numerical, analytical and experimental results are presented and discussed at the end.