Belt Conveyor Steel Cord Splice Research Based On Finite Element Method

Belt conveyor is the most important modern transporting equipment for bulk material. Belt is a very vital component for belt conveyor. The belt can cost 30% to 50% of the total conveyor investment. Due to the fact that both in transportation as well as in handling, conveyor belt are therefore made up by bonding together a number of conveyor belt sections through vulcanization. Each conveyor belt has at least one and generally a number of splices. The splices represent weak spots in the conveyor belt. The strength of the splices is lower than the nominal strength of the belt. The associated standstill times represent costs which can easily exceed the pure installation costs. Hence, the analysis of steel cord conveyor belt splices has a very important significance.This dissertation first selects splice in ST1250 belt, use ANSYS finite element software to build model. Use Top-down modeling method by model building. Select two-parameter Mooney-Rivlin model in butter elements due to this model conformed to experimental data very well when the elongation less than 100%. Though analyzing the built models, obtain the result that the gap between the cords in splices must have enough width in order to improve the force condition in butter. For high-strength belts, due to the high density, only by increasing steps, can meet this requirement.For three-step splice, use down-top modeling method to establish plane model. And program a suitable composition using in this dissertation by means of APDL (ANSYS Parametric Design Language). It can analyze the models in different types and parameters. Though analyzing the butt end and the length of splices, obtain the stress in butter decreased with the increasing of their length. But by the limit of the cord break force, the length of splice can not be made too long in order to avoid wasting. Though analyzing the different type, maximum value in 213-pattern is less than the other two patterns. So use the 213-pattern can improve the load capacity of the splices.