Steel Structure Analysis And Optimization Design Of Circular Pipe Belt Conveyor Based On Engineering Software 3D3S

The pipe belt conveyor has the advantages of enclosed material transport and high flexibility in line layout,which is in line with the current trend of environmental protection and green material transport,especially in ports,mines,grain mills,steel plants and other areas where bulk materials need to be transported.Due to the high flexibility of the line arrangement of the pipe belt conveyor,it has a wider range of applications when crossing railways and rivers than ordinary belt conveyors.Therefore,it is necessary to analyse and optimise the design of the supporting steel structure of pipe belt conveyor,has a direct link and impact on the improvement of conveying efficiency.The main research elements of this paper are as follows.(1)As 3D3S software has less use in the calculation of steel structures of pipe belt conveyors,in order to illustrate the applicability of the software to calculate the steel structure of pipe belt conveyors,on the basis of the analysis of the loads and the form of loads on the steel structure of pipe belt conveyors of a project,two different research methods,namely theoretical derivation calculation and 3D3S software rapid modelling analysis,were used to generalise the individual bars in a section of truss structure.The internal forces in a section of the truss structure are calculated using two different methods: theoretical derivation and rapid modelling analysis.The results are compared with conventional methods of calculating steel structures,thus illustrating the applicability of the 3D3S software for calculating steel structures.(2)Aiming at the stability problem of the steel structure of the circular tube belt conveyor and the difference of the calculation results of the same structure in the single structure and the whole machine structure as a whole,and the 3D3S software was used to carry out finite element analysis on the steel structure of the whole machine of the pipe belt conveyor and three special structures to verify their strength,stiffness and stability.The results of the two analyses were compared and the reasons for the discrepancies were identified.For further optimisation,a method is proposed for parametric modelling of the truss model created by 3D3S using the programming language APDL to write command flows.(3)In order to find the dangerous section where resonance may occur,3D3S software was used to carry out a dynamic modal analysis of the steel structure of pipe belt conveyor,obtaining the self-oscillation frequencies,vibration diagrams and corresponding vibration results of order 1 to 6,finding the structural weak points and further verifying the applicability and feasibility of 3D3S software for the dynamic analysis of the steel structure of pipe belt conveyor.It further verifies the applicability and feasibility of 3D3S software for the dynamic analysis of pipe belt conveyor steel structures.It provides a new method for the dynamic analysis of the same type of steel structures.(4)In order to find a structural optimization method that fits the actual project,the APDL parameterization was used to interface the 3D3S software with Workbench,and the two types of steel sections used in the truss structure of the circular pipe belt conveyor were optimised using the DOE(Design of Exploration)module in ANSYS Workbench.The section size was optimised to reduce the weight of the truss by 192 kg,and the section size was optimised to meet the mechanical and operational requirements of the truss to reduce consumables and costs.