Effect of Load Variations on The Static Stress and Fatigue Life Estimation of Crane Hook Using Finite Element Method

Directorate of Laboratory Management, Research Facilities, and Science and Technology Park, National Research and Innovation Agency (BRIN), Indonesia

^* Corresponding author: lasinta.ari.nendra.wibawa@brin.go.id

Abstract

The crane hook is one of the critical components of a crane that functions to lift objects from one place to another. This equipment is often used for the assembly process of rocket motors. This study aims to examine the effect of load variations on the static stress and fatigue life estimation of Crane Hook. The analysis was carried out using the finite element method with the help of the Ansys Workbench software. Loads of crane hook were varied 5, 6, 7, 8, 9, and 10 Ton. The type of loading is full-reserved, the type of analysis is stress life, and the theory used is the Gerber mean stress theory. The material used is Al 6061-T6. Static stress simulation results show that the crane hook can withstand dynamic loads of up to 10 Tons because it has a safety factor of more than 2, to be exact 2.03. The fatigue life simulation results show that the hook crane fails to reach a fatigue life of 1 million cycles at a load of 10 Tons.