一种橡胶硫化有限元分析方法  

Finite Element Modeling of Rubber Curing Process

作　　者：张建[1] 唐文献[1] 王国林[2] 张鑫[1] 

机构地区：[1]江苏科技大学机械工程学院,江苏镇江212003 [2]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《橡胶工业》2012年第7期401-407,共7页China Rubber Industry

基　　金：江苏省道路载运工具新技术应用重点实验室开放基金项目(BM2008206009);高等学校博士点基金项目(20070299006);江苏省六大人才高峰项目(07D019)

摘　　要：提出一种橡胶硫化过程的有限元分析方法,考虑了热导率和比热容随温度和硫化程度的变化关系,分别采用Nth-order,Piloyan,Kamal-Ryan,Kamal-Sourour和Rafei五个动力学模型拟合试验所得的橡胶流变曲线,找出最佳动力学模型,采用无量纲参数并结合Arrhenius函数来描述诱导期。以洗衣机配件橡胶压头为例,运用ABAQUS软件及其用户子程序UMATHT对压头硫化模型进行数值计算,并分析了压头在硫化过程中的焦烧时间、温度和硫化程度等热性能参数。结果表明,所提出的方法是切实可行的,为橡胶制品的硫化工艺过程设计提供了一种较为经济实用的预估方法。A systematic method for finite element analysis of rubber curing process was presented.The thermal conductivity and specific heat capacity varying with temperature and state-of-cure were considered, and the accuracy of five kinetics models such as Nth-order, Piloyan, Kamal-Ryan, Kamal- Sourour and Rafei model were evaluated to give the optimum kinetics model according to the curing curves. The induction period was described by dimensionless parameters combined with Arrhenius function. Taking rubber piston for washer as an example, ABAQUS software and user subroutine UMATHT were used to calculate the curing model and analyze the induction time, temperature and state-of-cure of the piston during the curing process. The results showed that the finite element meth- od was suitable to provide cost-effective and practical prediction for rubber curing process.

关 键 词：橡胶 硫化动力学 热物性 焦烧时间 有限元分析 

分 类 号：TQ330.13[化学工程—橡胶工业]