高湿环境紫外老化橡胶支座压缩弹性模量的有限元模拟  

Finite element simulation of compression elastic modulus for ultraviolet aging rubber bearings in high humidity environment

作　　者：高会文 赵建锋[1] 聂健行 GAO Hui-wen;ZHAO Jian-feng;NIE Jian-xing(College of Civil Engineering,Qingdao University of Technology,Qingdao 266520,China;China Railway 23rd Bureau Group First Engineering Co Ltd,Rizhao 276826,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266520 [2]中铁二十三局集团第一工程有限公司,山东日照276826

出　　处：《合成橡胶工业》2025年第1期69-72,共4页China Synthetic Rubber Industry

摘　　要：为了研究在高湿度紫外线辐照环境下橡胶材料及橡胶支座力学性能的变化规律,对橡胶材料进行了紫外老化试验,并基于试验结果和Neo-Hookean模型,通过有限元模拟探讨了紫外老化时间对橡胶支座压缩弹性模量的影响。结果表明,随着紫外老化时间的增加,橡胶材料的拉伸强度整体呈现下降趋势,但在老化42 d时出现小幅增大;扯断伸长率表现出相同趋势,其中在老化28~90 d区间内的变化较小;压缩弹性模量越来越大,材料硬度越来越高。紫外老化对橡胶支座压缩弹性模量的影响并不明显,随其增加压缩弹性模量总体是先增大后减小。In order to investigate the mechanical property alterations of rubber materials and rubber bearings exposed to high-humidity ultraviolet(UV)irradiation,UV aging experiments were conducted.Based on the experimental data and Neo-Hookean model,the effect of UV aging time on compression elastic modulus of rubber bearings was analyzed through finite element simulation.The results showed that with increase of UV aging time,the overall tensile strength of the rubber material showed a decreasing trend,but a slight increase occurred at 42 d of aging.The elongation at break showed the same trend,with relatively small changed within the aging range of 28-90 d.The compression elastic modulus increased,which indicated the material hardness was getting higher.The effect of UV aging on the compression elastic modulus of rubber bea-rings was not significant,and as it increased,the compression elastic modulus generally increased first and then decreased.

关 键 词：橡胶支座 紫外老化 拉伸性能 压缩弹性模量 Neo-Hookean模型 高湿度 

分 类 号：TQ330.14[化学工程—橡胶工业]