Research On Finite Element Analysis And Optimization System Of Gantry Crane Based On APDL

The traditional design of gantry crane is very time-consuming and structure behavior "surplus". Applying the finite element method to the design of gantry crane will furthest improve the design efficient and reduce production cost.In this paper. On the basis of further study of the finite element theory and parametric technology, the portal-framed structure of gantry crane is the research object and ANSYS is the tool, by using its parametric design language (APDL) for secondary development, a finite element analysis and optimization system is established for the portal-framed structure of gantry crane. The system sets the parametric design, analysis, optimization functions into one, and all of these functions are packaged as macro. It can quickly realize parametric modeling of the portal-framed structure.The main research work and achievements are as follows:(1) Based on ANSYS macro document,formulating ANSYS toolbar buttons to system interface clear and the parameters input dialog box is Chinese description.It reduces the use of ANSYS software threshold.(2) Based on ANSYS parametric design language APDL, established the portal-framed structure of gantry crane of the parametric finite element analysis model. Model only need to enter the parameters and the rest by program. It further reduce use of ANSYS software threshold.(3) Analysis the force conditions of gantry crane, and in view of the different working conditions, analysis static properties and dynamic properties of the portal-framed structure of gantry crane.(4) Based on optimal design theory, Related parameters of the of the portal-framed structure is the variable of optimal design, and the minimum weight of the of the portal-framed structure is the target function. On the basis of satisfied at the strength, rigidity and other performance requirements, this paper does optimal design to the portal-framed structure. And tests the result of the optimal design to prove the feasibility of the optimal design.(5) In this paper, ANSYS second development technology applies to the finite element analysis and optimization design process of the portal-framed structure of gantry crane. It has the important practical significance to combines the finite element calculation with the parametric technology to improve the automation level of the structure analysis.