Parameterized Finite Element Analysis And Topology Optimization Design On Belt Conveyor Pullleys

The belt conveyor is the most important translation equipment which can carry categories of materials. Belt conveyor pullleys are the key driving parts in belt conveyor. It includes the role of power transmission and change the direction of belts movement. The failure of pullleys has serious consequences on personal safety and the whole system. There are many reasons for the failure of the pullleys. One of the important reasons is that selecting parameters of the structure is irrational.For the design of drum with light weight, high strength and the safey and reliablity in actual operation, It will be very significant to enhance the design capability of pullleys by using the technology of FEA.First,This paper carry through a static analysis on the drum by finite element analysis software ANSYS. The assembly stress which was cause by RCLS was considered. The contact elements were used to imitate the contacts between axis and hubs, or between axis and inside cones of RCLS, or between hubs and outside cones of RCLS, or between insider and outsider of RCLS. To ensure that the finite element model can simulate the real roller force truly and accurately. On the basic of this two drum modeling and analysis method, we developed parameterized FEA software using the UIDL and APDL from ANSYS. This software is parameterized completely, can compute the stiffness and strength of several kind pullleys. The user only need to select the analysis type of drum, and input the construction,load,material and grid parameters according to the prompt of the software interface. Then the FEA computation can be carried out. At last, user can obtain the computing results. The code of the APDL is public to the users, so it can be rewritten when the user have special analysis purpose. This software can reduce the work intensity, shorten design period, having definite benefit. This parameterized FEA system is also a favorable base for developing the more perfect function roller's parameterized FEA system in the future. Finally, Introduced the topology optimization design mechod to drum design.This can provide inportant guiding role to the initial design of drum parts and components.The full text has six chapters. Now the main content are described below:1)In the process of study, firstly, the computing method about belt conveyor was investigated widely, and analyzed the inadequacy of the traditional drum design means.2)Classification and force analysis of belt conveyor drum. Illustrated, the structure, classification and the force model of the belt conveyor pullleys The establishment principle and the method of FEM on belt conveyor pullleys were systematically summarized. Then the strength and stiffness about driving drum and driven drum were researched in detail. The formula of the surface load that the drum suffered was deducted.3)The contact problem in the method of finite element and the software ANSYS was expatiated .Then the establishment principle and the method of FEM on belt conveyor pullleys were systematically summarized. Then analyzed the driving pullleys with double ends under three sets RCLS. Content relative to the RCLS is summarized. Researched the simulate method of the the assembly stress which was cause by RCLS in the finite element model. The contact elements were used to imitate the contacts between axis and hubs, or between axis and inside cones of RCLS, or between hubs and outside cones of RCLS, or between insider and outsider of RCLS. Carried through finite element analysis on the two cases that only the work load is considered and both the preload and the work load are considered. Then we drew the conclusion on the surface contact pressure, the distribution of the stress and the law of the deformation of the driven pullleysby finite element computation. Summarized the selection method of the RCLS based on comparison.4)This paper developed parameterized FEA software using the UIDL language and the APDL from ANSYS. This software is parameterized completely, can compute the stiffness and strength of 6 kind pullleys under three sets RCLS connection. The user only need to select the analysis type of drum, and input the construction,load,material and grid parameters according to the prompt of the software interface. Then the FEA computation can be carried out. At last, user can obtain the computing results. The code of the APDL is public to the users, so it can be rewritten when the user have special analysis purpose.5)As one of the structure optimization method,topology optimization can provide the decision maker with more selecting cases at the beginning of structure design.And this can reduce the design cost and abbreviate the R&D period,so in recentyears people pay more attention to the technology of topology optimization design..This paper is a basic study about topology optimization design theory and the methods and steps for topology optimization under ANSYS environment. It is under the structure geometry parameter determination premise to solve material geometric distribution form when the structure energy of deformation is the smallest.Then carried through topology optimization for the plate of bend pullleys. According to its topology cloud image,re-designed the plate. Reduced the quality of the structure and also uniformed and reduced the stress. Provided the design theory basis for the belt conveyor drum design.6)Presented the main conclusions. Progressed expectation for the future design of the belt conveyor drum and brought forward the future research direction.