Optimization Design Of Main Beam Of Truss Crane Based On Topology Optimiz

With the rapid development of the social economy,cranes,as important equipment for terminal container handling and lifting of railway freight yards,play an important role in social production and life,so the performance requirements of cranes are also very high.Because some current lifting equipment have the problems of self-heavy weight and low stress and small deformation or light self-weight and high stress and large deformation.In this paper,the main beam of the truss crane is taken as the research object,combined with the application of the existing topology optimization design method in the engineering structure,the variable density method is used,and the main beam of the crane is topologically optimized using the ABAQUS finite element software,and the ANSYS finite element The software performs modeling and static analysis on the truss crane.After checking the topology optimization,the stress and deformation of the main beam metal structure meet the requirements,and then make a comparative analysis with the truss crane in the actual project,and the topology optimized truss crane meets the actual requirements of the project.Through the optimization calculation of the overall finite element structural model of the crane,the results show that the quality has been reduced,and the lightweight design in engineering applications has been achieved.The main research contents of this article are as follows:(1)Introduced the domestic and foreign research status and development trend of cranes,and explained the classification algorithm used in structural optimization and the solution algorithm used in topology optimization.This paper introduces the finite element software used in this article,and takes the actual engineering as an example,sets the parameter values of the truss crane,establishes the finite element model of the truss crane,and calculates the various allowable values of statics.(2)The Lagrange multiplier method is used to derive the optimized iteration formula and the mathematical model of the topological optimization design of the main beam is created.The topological optimization of the main beam is carried out using ABAQUS finite element software.By analyzing different conditions,different working conditions,and different parameter conditions,the optimal topological structure of the main beam is also different.When the main beam has a partition and the default ratio is 0.65,the main beam topology structure the best.(3)The ANSYS software is used to establish the whole model of the optimized main beam,and the static analysis is carried out.After the verification,it is compared with the calculation results of the truss crane in the project,and the truss after topology optimization is found.The stress and deformation of the crane are smaller than the actual structure of the project,and the topology is reasonable.(4)In order to realize the requirements of light weight,the topologically optimized truss crane is re-sized,the cross-sectional size of the beam unit and the spacing of the partitions are used as design parameters,and the allowable stress and allowable deformation are used as constraints to reduce Quality is the finite element optimization of the design goal.The optimization results show that the overall quality has been greatly reduced.