Development And Research Of Temperature Profile Analysis Software For Steady State Rolling Tire Based On ABAQUS

Varied distribution material structure, complex external factors including working condition etc together make mechanism of thermogenesis and temperature rise of the rolling tire complex,which bring great challenges to research of tire temperature profile. Although finite element analysis has been widely applied into the research, rich knowledge of finite element theory and perfect operation skills are both needed for FEA software operators. Moreover, repetitive work of analysis of different kinds of tires will cause low benefit index of labor cost,thus restrict application of FEA of tire temperature temprofile in small and medium enterprises.In this paper, temperature profile analysis software for steady state rolling tire was developed via Python based on ABAQUS. The users do not have to know any FEA knowledge or skill, just run the software and enter the model and working condition parameters as well as dynamic properties and thermal properties, then the software will work out the temperature temprofile result of the tire.The development language of the software was determined. Both script interface of ABAQUS secondary development and internal command of ABAQUS were developed via Python, and Python has many advantages including easy, dynamic, advanced etc. In view of the facts, Python was selected as the development language of the software.Script of readodb2 dinp.pyc was compiled. The script was edited in Editplus 3.8 and was used to read model data of coordinates, element connectivity, section and section assignment and result data of element volume, strain and stress of nodes. If “Open odb and inp file” button is clicked, the script will run.Script of temprofile.pyc was created. Based on Interpolation, Fourier expansion and Integral interpolation method, the program code was created in IDLE of Tkiner toolkit,saved as temprofile.pyc. The cx_freeze was used to compile the script to generate software package, in which the suffix of executable file was “.exe”.The reliability of the software was verified. The software developed above was used to calculate the temperature temprofile of 275/70R22.5 radial tire under load of 34790 N and running speed of 50km/h, infrared thermometer was used to measure the actual temperature of tire surface, the deviation between calculation results and measurement results was under 3%, thus confirmed the reliability of the calculation results by the software; The software was also used to calculate the rolling resistance coefficient of 295/70R22.5 radial tire under load of 23324 N and running speed of 80km/h, the calculation result is 0.006 and the measurement result is 0.005, thus confirmed the universality of the software.