Browsing by Author "Shumuye, Tigabey"

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    Optimization and Fatigue Analysis of Crane Hook Using Finite Element Method
    (AAU, 2018-06) Shumuye, Tigabey; Tamrat, Tesfaye (PhD); Hailemariam, Nugus (Mr.) Co-Advisor
    The failure of crane hook occurs because of the stress induced due to repetitive loading and unloading conditions. These are the causes of fatigue failure of the crane hook. To minimize the failure of crane hook, the stress induced in the crane hook is studied and reduced the maximum stress than existing (trapezoidal) crane hook. By modifying the geometry (cross section) the stress of the crane hook is reduced comparing with the standard crane hook. In this study, the cross section has been selected as a basic parameter to optimize the hook design which carries 4.5-tons load. Because of the stress reduction the fatigue life of the model-3 crane hook goes to increase (have better life comparing with standard and other models of crane hook). Here, there are four types of cross-section for crane hook namely model-1, model-2, Model-3 and trapezoidal (standard). These crane hooks are modelled and analysed using SOLIDWORK and ANSYS software respectively, and the results of each modified crane hooks are compared with trapezoidal hook results based on different criteria’s which are maximum stress, maximum deformation, fatigue life and weight of the hooks. Finally based on the comparisons of each modified modelling crane hooks with the standard crane hook, model-3 is selected. The fatigue life cycle of model-3 crane hook is increased by 22.78% from the standard crane hook with the same applied load. The maximum Von-Misses stress and weight of model-3 crane hook are reduced from trapezoidal (standard) crane hook by 3.461 MPa (4.133%) and 0.354 Kg (2.49%) respectively, and model-3 crane hook has better results of safety factor & fatigue life than standard crane hook with the same applied load. Therefore, model -3 crane hook is considered as optimum results.