Kombination von Eigenspannungen und betrieblichen Spannungen in einem Kranlaufrad

Abstract

Even with crane wheels of gantry cranes and overhead cranes complying to current EN standards, similar damages to wheel rims occur regularly. For design and stress analysis only the operating load is considered in the standards. Studies show, however, that crane wheels are already subject to high residual stresses from the production process. The present work combines this residual stress state analytically and by means of FEM with the operating loads. The calculated total stress state gives indications of the cause of the occurring damage patterns. The calculated stresses also show that attention should definitely be paid to the residual stress state in the crane wheel design process.