文献类型：期刊文献

中文题名：铁氟龙材料超弹性本构模型拟合效果评估及有限元仿真验证

英文题名：Fitting Effect Evaluation of Hyperelastic Constitutive Model of Teflon Material and Validation by Finite Element Simulation

作者：周知进 黄雪值 潘建林 邹书航

第一作者：周知进

机构：[1]广西科技大学机械与汽车工程学院,广西柳州545616;[2]贵州理工学院工程训练中心,贵州贵阳550003

第一机构：广西科技大学机械与汽车工程学院,广西柳州545616

年份：2025

卷号：53

期号：7

起止页码：137-142

中文期刊名：塑料科技

外文期刊名：Plastics Science and Technology

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金项目(51479073);贵州理工学院高层次人才启动项目(XJGC20190926)。

语种：中文

中文关键词：铁氟龙材料;超弹性本构模型;拟合效果评估;有限元分析

外文关键词：Teflon material;Hyperelastic constitutive model;Fitting effect evaluation;Finite element analysis

摘要：密封圈材料对航空航天液压系统安全高效运行至关重要,提升密封性能意义重大。铁氟龙材料无法在线弹性下通过弹性模量和泊松比进行准确表征,超弹性力学性能参数匮乏。对铁氟龙材料进行单轴拉伸、单轴压缩和平面拉伸试验,基于拟合优度、均方根误差及相对偏差的计算结果对3种不同本构模型拟合效果进行分析,最后对拟合效果最佳的本构模型进行有限元仿真,验证所选用本构模型的合理性。结果表明:在3种不同本构模型中,在9参数Mooney-Rivlin本构模型下铁氟龙拟合曲线与试验数据高度吻合,拟合优度超0.95,均方根误差低于0.15,相对偏差范围在5%以内。仿真验证与试验数据高度吻合,确保铁氟龙材料本构模型在航空航天应用中的合理性。
The material of seals is crucial for the safe and efficient operation of aerospace hydraulic systems,and enhancing sealing performance is of great significance.Teflon material cannot be accurately characterized by elastic modulus and Poisson's ratio under linear elasticity,and there is a lack of hyperelastic mechanical property parameters.Uniaxial tensile,uniaxial compressive,and planar tensile tests were conducted on Teflon material.The fitting effects of three different constitutive models were analyzed based on the calculation results of goodness of fit,root mean square error,and relative deviation.Finally,finite element simulation was performed on the constitutive model with the best fitting effect to verify the rationality of the selected constitutive model.The results show that among the three different constitutive models,the fitting curve of PTFE under the 9-parameter Mooney-Rivlin constitutive model is highly consistent with the experimental data,with a goodness of fit exceeding 0.95,root mean square error below 0.15,and relative deviation within 5%.The simulation verification also highly matches the experimental data,ensuring the rationality of the PTFE constitutive model for aerospace applications.