Finite Element Analysis Of Joint Deformation Of Steel Cord Conveyor Belt Based On Abaqus

Steel cord conveyor belts have the advantages of high tensile strength,high friction resistance,strong impact resistance and long service life.It is widely used in coal,mining,port,electric power and other fields.However,the steel cord splice area is the weakest part of the whole conveyor belt,and the splice deformation often occurs,resulting in a decrease in strength,and a serious belt breakage accident.In order to quantitatively reveal the changing rules of splice deformation and provide basis for conveyor belt design and safe operation,this paper uses finite element software(Abaqus)to carry out finite element simulation analysis on the relationship between deformation and strength of steel cord conveyor belt splices,the main research work is as follows:1.The steel cord conveyor belt splice model was established in Abaqus.The model consists of three parts:upper and lower cover rubber,steel cord and failure unit.The Mooney-Rivlin model was used to describe the mechanical behavior of the upper and lower covering rubber in the steel cord conveyor belt,the steel cord was simplified and replaced by a cylinder,the failure unit was used to simulate the bonding relationship between the steel cord and the upper and lower covering rubber.2.Simulation analysis was done on the splice model with single steel cord,and compared the simulation results with the tensile test results,especially compared the changes of steel cord,upper and lower cover rubber and adhesive layer and the change of steel cord pullout force with time.The trend verifies the correctness of the finite element model and the simulation results.3.By changing the number of steel cords of the splice model,the way of steel cord arrangement,the spacing of steel cords and the position of steel cords,the splice model with multiple steel cords is simulated and analyzed.The variation trend of the pullout force under different factors is obtained,and the variation law of the steel strength under the influence of different factors is summarized,which lays a foundation for the analysis of the influencing factors of the overall strength of the steel cord conveyor belt splice.4.The splice deformation commonly seen in the actual steel cord conveyor belt,such as the different degree of debonding of the steel cords at the splice,the steel cord twitching,the uneven distribution of the steel cord and the missing part of the steel cord,are analyzed,and the splice deformation and splice overall are summarized.The quantitative relationship between the strengths and its application to the conveyor belt splice non-destructive testing system can quantitatively determine the performance of the steel cord conveyor belt splice.The research results in this thesis can provide theoretical basis for safety inspection,splice performance analysis,maintenance and renewal of steel cord conveyor belts;prolong the service life of steel cord conveyor belts and splices,prevent the occurrence of broken belt accidents,improve production efficiency,and have high application value;provides some reference value for optimizing the design and manufacture of steel cord conveyor belt splices as well.In the non-destructive testing system of the conveyor belt splices,the performance of the steel cord conveyor belt splice can be quantitatively judged.