Finite Element Analysis And Optimization Of Pipe Conveyor Truss

Pipe conveyor is a kind of conveyor improved and developed on the basis of traditional trough belt conveyor.It is widely used in metal smelting,port transportation,logistics handling and other fields.Pipe conveyor can realize the transportation of twoway and large inclination closed bulk materials in complex and harsh environment.Today,with serious pollution problem,it is an efficient and environment-friendly continuous belt transportation equipment.As the core component of pipe conveyor,truss structure is the most important part of the conveyor,which has a direct impact on the manufacturing cost and the performance of the whole machine.This paper takes the truss structure of a pipe conveyor of a project as the research object,analyzes the strength and stability of the truss by using ANSYS software,and optimizes the design of the truss structure on this basis.The main research contents are as follows:(1)This paper expounds the common structural characteristics of pipe conveyor truss in engineering,analyzes the load combination and calculation method borne by pipe conveyor truss in detail with reference to the specifications in building steel structure design,and deduces the calculation formula of internal force of truss chord and web member by using the relevant knowledge of engineering mechanics,so as to calculate and analyze the distribution law of internal force,Then the internal force of the dangerous members of the truss structure is obtained by superposition of the load effect combination formula,and the strength and stability of the dangerous members of the truss are checked.The check results verify that the members meet the internal force requirements.(2)Through the design modeler platform,the conceptual modeling of the truss structure of pipe conveyor is carried out,and the strength and stiffness of the truss structure are simulated and analyzed by applying vertical load and horizontal wind load with ANSYS software.The stress nephogram and deformation nephogram of the truss are obtained respectively.On this basis,the stress distribution law of truss members is analyzed.The two analysis results are calculated by the load effect combination formula and compared with the strength check results.The comparison results verify the accuracy of the simulation.The dynamic modal analysis of the truss structure is carried out to solve the natural frequency,so as to avoid the resonance phenomenon caused by the high-speed rotation of the idler group when the conveyor is working.Through the buckling analysis of truss structure,the vibration mode diagram and buckling load factor of the model are obtained,the position and trend of possible instability are predicted,and it is verified that the structure meets the stability requirements.(3)The central composite experimental design(CCD)is used to collect the sample points,and the response values of the sample points are obtained by using the finite element numerical simulation technology.The second-order response surface approximate model of mass,stress and displacement is constructed by importing the design expert software,and the accuracy of the response surface model is tested.The mathematical model is established and combined with particle swarm optimization algorithm.The optimal parameters that meet the constraints are obtained through algorithm iteration and brought into the finite element model for verification.The final results show that the weight reduction ratio of the optimized truss is 20.92%,the optimization effect is remarkable,and the purpose of lightweight is achieved.