نوع مقاله : مقاله علمی
عنوان مقاله English
نویسندگان English
Overhead cranes are widely used in industrial applications, and among their components, wheels exhibit the highest failure rates due to severe operating conditions. These wheels are subjected to dynamic and cyclic loading, making fatigue the dominant failure mechanism governing their service life. This study investigates the influence of adding cylindrical slotted holes to the wheel wall on static stress distribution and fatigue performance, with the aim of reducing material consumption while ensuring structural safety. A 60-ton nominal capacity overhead crane wheel was selected as the case study. Static loading conditions were simulated using the finite element method (FEM) to determine stress levels and static safety factors in the regions surrounding the holes. The numerical results were validated through experimental load testing. Based on the static analysis results, fatigue behavior was evaluated numerically using the Dang Van multiaxial fatigue criterion. Cylindrical slotted holes with diameters ranging from 10 to 70 mm were investigated, while relevant international design standards were taken into account. The results indicate that for an AISI 1045 steel wheel under the specified loading conditions, a maximum hole diameter of 33 mm can be adopted, leading to a material reduction of approximately 9.8% without compromising static strength or fatigue safety.
کلیدواژهها English