DESIGN AND ANALYSIS OF CRANE HOOK WITH DIFFERENT CROSS SECTIONS AND MATERIALS

Abstract

Now-a-days Crane Hook is mainly used for the lifting and moving of heavy objects or products. Crane hook mainly works on hydraulic systems to provide a much greater lifting capability. Whenever the lifting is taking place there is a chance of failure of the crane hook due to the stress or by the repetitive loads, so that it can cause huge loss in terms of assets and it can increase death rate. So the design of hook and the materials used for the preparation of the hook need to be good. Hook is highly liable component and are always subjected to failure due to the amount of stresses concentration which can eventually lead to its failure. In the present work a crane hook is designed using different materials with different cross sections and the von-Mises stress distribution and total deformation, are calculated for a 5 ton load applied at an ambient temperature of 25°C. Real time pattern of stress concentration in 3D model of crane hook are obtained. This work is considered mainly to gain an insight on deformation and stress distribution in
hook. Different materials like Wrought Iron, Stainless Steel, Structural Steel and Forged steel are considered for the analysis. Four cross-sections like triangular, rectangular, circular and trapezoidal are used for lifting in practical scenarios (under normal working conditions).The modelling of crane hook is done in PTC CREO. The analysis of hook is carried out in ANSYS WORKBENCH. So by predicting the stress concentration area, the stress failure rates are estimated for different materials and cross-sections with the sole intention of enhancing crane hook life. It is to be found that Forged Steel with trapezoidal cross-section is best suited for the Crane Hook.