塑钢窗橡胶密封条老化后密封性能有限元分析  

Finite element analysis of sealing performance of rubber seal strip after aging of plastic-steel window

作　　者：王林林 王安迎 王伟[1] WANG Linlin;WANG Anying;WANG Wei(Key Laboratory of Rubber-Plastics,Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《弹性体》2021年第2期12-16,共5页China Elastomerics

基　　金：国家自然科学基金资助项目(21274072);山东省自然科学基金项目(ZR2018MEM022)。

摘　　要：借助有限元分析软件ABAQUS,采用Yeoh本构模型,对不同热氧老化程度的塑钢窗用三元乙丙橡胶密封条进行非线性有限元分析,得到密封条的变形量、应力分布规律以及接触面上的接触压力变化。此外,利用橡胶密封条的老化寿命预测模型分析其老化程度。结果表明,随着老化时间的延长,密封条的密封性能有所下降,但在服役期内密封依然可靠,验证了有限元方法结合老化寿命评估来分析密封条老化后的密封性能是行之有效的,为类似橡胶密封条结构的设计及老化后性能评价提供了良好的参考价值。In the ass istance finite element analysis software ABAQUS and Yeoh constitutive model,the nonlinear finite element analysis of EPDM sealing strip of plastic steel window with different thermal and oxygen aging degrees were carried out,and the deformation,stress distribution and the variation of contact pressure on the contact surface were obtained.Moreover,the aging degree of rubber seal was analyzed by using the aging life prediction model.The results show that the sealing performance of the sealing strip decreases with the extension of the aging time,but the seal performance is still reliable during the service life.It verifies that the finite element method combined with aging life assessment to analyze the sealing performance of the aging sealing strip is effective,which provides a good reference for the design of similar rubber sealing strip structure and the performance evaluation after aging.

关 键 词：窗用密封条 三元乙丙橡胶 有限元分析 老化 密封性能 

分 类 号：TQ336.7[化学工程—橡胶工业]