| The belt conveyor is the most important translation equipment which can carry categories of materials. Belt conveyor drums are the key driving parts in belt conveyor. Drums consist of axis, hubs, end disks and drum shells (or the releasable cone locking system-RCLS).The driven drums are only subject to the average normal loading. Compared to the condition of driven drums, the driving drums'loads are more complex, containing alternating normal loading and circumferential loading. For the complexity of the pulley system, in addition to the assembly stress from the interference assembly or RCLS, it's difficult to compute the strength and stiffness of the drums by analytics method. While lacking the suitable calculation method of strength and stiffness about the drums, if we increase the safe coefficient without enough reason, the drums become bigger and heavier. However the reliability of the drums can't be increased. The technology of FEA can solve the problems which the analytic method can't. Because of high efficiency and veracity, the technology of the FEA is used broadly in the engineering field in the past decades. It will be very significant to enhance the design capability of drums by using the technology of FEA.In the process of study, firstly, the computing method about belt conveyor was investigated widely, and it was found that the application of FEA is essential on the study of drums. Secondly, the relative content about drums was summarized. Thirdly, 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 drums were systematically summarized. Then the strength and stiffness about driving drum and driven drum were researched in detail, and the assembly stress which was cause by RCLS was tested. Last, a parameterized FEA software was formed。The establishment of FEM is a primary step in CAE analyses. The quality of models is directly related to the precision of the results, evenly the correctness. Each part of drum is assembled as a unit. The construction is very complicated. So we must do some simplification, but the purpose of analysis must be kept. In this paper, less important parts were ignored, the axis is considered as the same diameter axis, and the bearings were simplified as constraint, the strength of the weld crack were supposed enough, so the two parts connected by welding were considered as one continuous body. When choosing elements, we should first consider the mechanics characteristic. At the same time we should try to use simple elements, in order to simplify models and reduce the expenditure of computation. Therefore in this paper when establishing the 3D FEM of drums, 3D entity elements were used to imitate all drum parts. 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. For the regular structure of drums, SHELL63 from ANSYS is used as the transition elements to form 3D FEM by the method of drag and rotate. Work loads were put on the surface of drums as pressure. In the aspect of movement constraint on rigid body, we used the form of sphere coordinate to imitate the bearing constraint. And the couple free degree (CP DOF) is adopted to limit the rotation of the driving drum axis.In the analysis procedure of the driven drums with interference connection, firstly, using the interference connection theory introduced in the paper, we made an estimation of the contact surface pressure. Then we drew the conclusion on the surface contact pressure, the distribution of the stress and the law of the deformation of the driven drums by finite element computation. From the FEA results, we realized that pressure is more concentrative in the two ends of the hub. If we took no account of concentrative pressure, the theoretical value and the computing value show consistency. So it's valid to use contact nonlinear method when imitating interference connection. The pressure on end disks is mainly caused by interference pressure; the work load has little effect on the maximum pressure, but causes the fluctuation of stress along the circumference with two times. From the law of stress distribution along radial direction on the end disks, we can realize that the end disk with the same section is not the best design, the ramping section is better.Compared to the driven drums, driving drums are subjected to bigger and more complex loads, so the computing results have different points. In the analysis procedure of the driving drums with double ends, first content relative to the RCLS is summarized, and then two conditions of the driving drums were computed, which included only work loads and assembly stress and work loads. The FEA results show that in the middle of the drum shell which is far from assembly region, the stress and deformation is not affected by the assembly pressure. The circumferential stress and the axial stress, which vary periodically along circumference, are preponderant among all direction stresses in the middle of drums shell. But circumference stress on the different sections of the drum shell varies different times. This law is meaningful to the fatigue damage of the drum shell. The equivalent stress on the end disks which is caused by work load (with no assembly stress) varies 4 times along circumference, but when assembly stress and work load working together, it varies from 4 times to 2 times. So the variable law of the equivalent stress along the circumference is related to the value of the assembly stress and work load.Both interference connection and RCLS connection involve the contact problem. In order to verify the validity of the FE nonlinear contact, we tested installing stress in a drum which uses RCLS. The test result and the FE result are coincident. So the conclusions of stiffness and strength from the drums FE computation can be used as reference in the construction design of the belt conveyor.In this paper, we compute driven drum with interference connection and the driving drum with RCLS connection by ANSYS. On the basic of this two drum modeling and analysis method, we developed parameterized FEA software using interface program language Visual Basic and the APDL from ANSYS. This software is parameterized completely, can compute the stiffness and strength of 5 kind drums. 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.By dint of FEA software–ANSYS, this paper computes two types of drum. The conclusions drawn from the law of stress and deformation, can explain the damage reasons in some extent, and can be used as reference in the construction design of drums. The drum parameterized FEA software supplies a simulation base for the reasonable design. 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.
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