Finite Element Analysis And Fuzzy Optimal Design For QY80 Truck Crane Boom

Truck cranes are widely used in municipal,factory,port,construction sites,warehouses,stations,mines,power stations and other fields due to their large operating range,good maneuverability and good stability.The rapid development of large-scale infrastructure construction in China and the “Belt and Road” requires China's truck crane technology to rapidly improve the performance of safety,lifting capacity,maneuverability and stability and the degree of automation.As the main working part of the crane,the boom is responsible for lifting and handling goods,and it is subjected to various external loads of the crane and consumes a large amount of steel.The advantages and disadvantages of the boom structure design will directly affect the overall performance and production cost of the truck crane.In this paper,the boom of QY80 truck crane is taken as the research object,and the work performance research and fuzzy optimization design are carried out.The specific research process includes:First of all,on the basis of in-depth research,the research content,steps and methods of the paper are determined by analysing the research status and development trends in the field of truck cranes.It introduces the structure of the boom,the shape of the cross-section and the working principle of the telescopic work,and carries out the load and force analysis.At the same time,this parttheoretically derives the force calculation formula of the boom during the operation.Secondly,a three-dimensional model of the boom is established in SolidWorks.Using the ANSYS workbench co-simulation platform,thefinite element statics analysis of the boom under full arm conditions is carried out,and the stiffness and strength of the boom are obtained.The strength test of the boom was carried out to verify the accuracy and feasibility of the method for establishing,simplifying and finite element analysis of the boom model.Finally,the safety and stability of the boom are verified by buckling and modal analysis.On the basis of this,the minimum weight of the boom is the optimization target,and the section size parameters of the boom are design variables,considering geometric parameters,strength,stiffness and the fuzzy of the constraint conditions such as local stability is established.The asymmetric fuzzy optimization model of the QY80 truck crane boom is established.The optimal horizontal cut-off method is used to solve the model,and the fuzzy optimization design of the boom is completed.