Study On The Influence Of Tire Forming Parameters On Durability Of Tire Based On ABAQUS

In the tire building process,the flat width and the auxiliary drum(BT drum)diameter are the two most important parameters,which are critical to the durability of the tire.In actual production,the engineer adjusts the extension and deformation of the carcass and belt by continuously adjusting the width of the flat and the diameter of the auxiliary drum to improve the durability of the tire.As a multi-layer composite mesh structure,the tire is complicated in force.There is no theoretical model that can fully simulate the various performance requirements of the tire,especially the effect of changing the width and the diameter of the auxiliary drum on the bead and durability..Although the engineers in the actual production are repeatedly debugging the parameters,they are always in a state of exploration and experience,and the tires of different specifications also change the width and the diameter of the auxiliary drum.The experimental results may be reversed,so the application is Finite element analysis provides more flexible theoretical guidance in actual production,which can guide tire structure design,reduce tire stress concentration and heat generation,change the mechanical properties and temperature of tire parts during tire running,and improve tire durability.At the same time,it can shorten the research and development cycle and reduce the research cost,and has important research value and economic value.This topic is based on the actual research and development needs of an enterprise.Based on the ABAQUS software,based on the mechanical and thermal experimental data of the materials of various parts of the four seasons tires,according to the semi-coupling idea,the measured data such as the static grounding mark of the tires are used as comparison verification.Establish a precise force field model,change the relevant parameters to analyze tire stress changes,then establish a 275/65R17 tire temperature field model and change the relevant parameters to analyze tire temperature changes.First,the values of the width and the diameter of the auxiliary drum are changed,after the expansion of the forming drum capsule and the vulcanized capsule: the flat width changes the carcass stretch ratio;the auxiliary drum diameter changes the belt angle(in the software,the diameter of the auxiliary drum is used),the belt stretch ratio,the belt Layer density,carcass elongation(measured value),crown band stretch ratio.Secondly,the uniaxial tensile test was carried out on the rubber parts of the tires to obtain the stress-strain data.After comparing the final selection of the Yeoh model,the curve was fitted to obtain the constitutive parameters of the rubber parts of each part,and the reinforced rib model was used to simulate the cord composite.The finite element model was established and the model was examined to analyze the effect of the change in the flat width on the stress at the shoulder of the bead.Finally,the thermal conductivity,specific heat,density,etc.of the tire are determined through experimental determination and comprehensive theoretical research.The heat generation rate is calculated by means of MATLAB and Fortran language,the internal heat source is defined,the thermal boundary of the tire is determined,and the steady temperature field is established.At the same time,compared with the external surface temperature curve of the tire provided by the tire company,the accuracy of the model is verified,and the influence of the diameter of the auxiliary drum on the temperature of the bead of the bead is analyzed.The results of finite element analysis show that the change of the width of the flat and the diameter of the auxiliary drum has a great influence on the stress and temperature field of the tire.The appropriate width and width values and the diameter of the auxiliary drum significantly reduce the tires,especially the bead and shoulder.Stress and temperature improve the durability of the tire,providing guidance for future tire structural design optimization and molding parameter adjustment,and improving the service life of the tire.