Research On Lightweight Design Of Main Girder Of Bridge Crane Based On Improved FOA

Bridge crane,as a modern machinery indispensable large equipment,is widely used in metallurgy,construction and other fields.With the development of science and technology matures and the increasingly fierce market competition,the existing bridge crane can not meet the diversified needs of production,so the optimal design of the bridge crane is the industry trend.The traditional bridge crane design method will cause the crane part of the metal structure of large volume,big heavy and so on.Therefore,under the premise of ensuring the actual working conditions,the intelligent optimization algorithm is used to study the key structure of the bridge crane,which makes the bridge crane structure more compact and have great significance to the development of the crane industry.The main beam as a key component of the bridge crane,its lightweight research is particularly critical.Based on the basic Fruit Fly Optimization Algorithm,this paper proposes an adaptive fruit fly optimization algorithm based on velocity variable(VFOA),and the improved fruit fly algorithm design of crane box girder.The main contents are:(1)Analyze the current situation of crane and lightweight research at home and abroad,and determine the idea of using lightweight optimization of bridge crane to optimize the main beam of bridge crane.(2)Combining the adaptive step size and the basic FOA,the concept of velocity variable in the particle swarm algorithm is introduced,and the concept of speed variable is introduced in the particle swarm optimization algorithm.An improved Drosophila algorithm(VFOA)is obtained.Finally,the algorithm is used to study the weight of the main beam structure.(3)Using the girder of bridge crane as an example and establishing the optimization model of girder optimize the sectional dimension by the improved FOA and determine a set of reasonable parameters by comparing different parameters to compare the results of basic FOA.And then based on this set of parameters in SolidWorks modeling,and its application to Ansys software for simulation analysis.The results show that the optimized weight of the main beam model is obvious compared with the original model,and the feasibility of the optimization results is verified.