扁平轮胎硫化工艺的有限元分析

以255/30R22轮胎为例，用ABAQUS软件建立有限元模型对硫化过程进行两次模拟，一次不考虑反应热，另一次用子程序HETVAL加载反应热，分别得到两次模拟的温度场，并编写子程序UVARM得到有反应热条件下的硫化程度场。结果表明：轮胎硫化过程中，硫化反应热影响硫化温度曲线的峰值，但对最终温度影响不大；加载反应热能够更好地模拟轮胎真实硫化过程；无论温度场还是硫化程度场，总是薄胶料的值高于厚胶料的值；后硫化作用不容忽视，传统硫化工艺有改进的必要和空间。;With 255/30R22 tire as an example，a finite element model of the vulcanization process was established using ABAQUS software.The vulcanization process was firstly simulated without considering the reaction heat，and then simulated with reaction heat loaded by HETVAL.The tempe rature fields were obtained，respectively，and the vulcanization degree field for the simulation consi dering the reaction heat was obtained with subroutine UVARM.The results showed that， during tire curing process，the vulcanization reaction heat affected the peak position of the curing temperature curve，but had very little impact on the final temperature.Taking consideration of reaction heat could better simulate the real tire vulcanization process.The curing temperature of the thin rubber part was always higher than that of the thick rubber part，and the vulcanization degree of thin rubber part was also higher.It was found that post cure was important and it was necessary to further improve the traditional vulcanization process