| As international commerce industry growing prosperity, container transport ship which is dominant in the ocean logistics is increasingly developing in the direction of large-scale. In the meanwhile, giant quayside container crane, as the major container terminal handling equipment, has been rapidly developed. Metal structure being the main structure of the cranes has large dimensions and high safety requirements. Computer aided engineering (CAE) technology can be applied to the design process of crane metal structure to not only fastly and accurately evaluate the strength, stiffness and basic dynamic characteristics of the metal structure, but also facilitate the design optimization of the metal structure.In this paper, finite element method was employed to study the mechanical performance under various condisitons, buckling characteristics and lightweight design method of the crane metal structure. FE model for a certain type of giant quayside container crane was established with reasonable simplifications of its geometric model. According to the Europian Rules for the Design of Hoisting Appliances (FEM), typical working conditions were identified, and the static and dynamic strength, constrained mode of the crane metal structure were analyzed with geometrically non-linear finite element mothod. Buckling strength as a very important factor of gaint metal structure was also studied for key parts of the crane metal structure according to FEM. Finally, a lightweight design method for the metal structure of quayside container crane was proposed and used in the design improvement of a certain type of quayside container crane. In this mothod, structural stiffness, strength, as well as the modal frequencies are taken as constraining conditions, and minimum mass is the objective function. The proposed method will prove to be useful for the lightweight design of the metal structure of quayside container cranes.
|
PDF Full Text Request