XM23胶的单轴拉伸试验及超弹性本构模型构建  

Uniaxial Tensile Test of XM23 Glue and Hyperelastic Constitutive Model Construction

作　　者：罗鹏 孙亮[1,3] 程伟华 陈怀军[1,3] 罗海燕 LUO Peng;SUN Liang;CHENG Weihua;CHEN Huaijun;LUO Haiyan(Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031;University of Science and Technology of China,Hefei 230026;Key Laboratory of Optical Calibration and Characterization of Chinese Academy of Science,Hefei 230031)

机构地区：[1]中国科学院合肥物质科学研究院,安徽光学精密机械研究所,合肥230031 [2]中国科学技术大学,合肥230026 [3]中国科学院通用光学定标与表征技术重点实验室,合肥230031

出　　处：《宇航材料工艺》2023年第1期38-42,共5页Aerospace Materials & Technology

基　　金：高分辨率对地观测系统重大专项(民用部分)(No.30-Y20A19-9007-15/17),王宽诚率先人才计划“卢嘉锡国际合作团队项目”(No.GJTD-2018-15)。

摘　　要：XM23胶广泛应用于航天光学遥感器,用于粘接光学透镜与金属结构件,可以起到减振作用。目前对XM23胶的力学性能的研究都是基于线弹性理论,但XM23胶是一种高聚合物,表现出非线性特征,无法使用线弹性材料的杨氏模量和泊松比进行准确地表征。本文首先通过XM23胶的单轴拉伸试验测试出该胶的应力应变数据,基于超弹性理论,尝试运用3种超弹性本构模型进行数据拟合。分析发现,Mooney-Rivlin 3参数本构模型最适于表征XM23胶的力学性能,其本构模型材料参数C10为-0.2059 MPa、C01为0.6888 MPa、C11为0.0557 MPa。利用此本构模型使用有限元软件模拟了该胶的单轴拉伸试验,仿真得到应力应变数据在误差范围内与试验数据一致。XM23胶的超弹性本构模型构建为XM23胶的胶接结构有限元建模提供了理论和数据支撑。XM23 glue was widely used in aerospace optical remote sensors for bonding optical lenses and metal structural parts,which could play a shock absorption role.At present,the research of the mechanical properties of XM23 glue was based on linear elastic theory.However,XM23 glue was a high polymer and exhibited nonlinear characteristics,which could not be accurately characterized by Young's modulus and Poisson's ratio of linear elastic materials.In this paper,the stress-strain data of XM23 glue was first tested by the uniaxial tensile test of XM23 glue.Based on the theory of hyperelasticity,three kinds of hyperelastic constitutive models were tried to fit the data.The analysis shows that the Mooney-Rivlin 3 parameter constitutive model is the most suitable for characterizing the mechanical properties of XM23 glue.In the constitutive model,the material parameters C10 is-0.2059 MPa,C01 is 0.6888 MPa and C11 is 0.0557 MPa.Using this constitutive model,the uniaxial tensile test of the adhesive is simulated with finite element software,and the simulated stress and strain data are consistent with the test data within the error range.The construction of hyperelastic constitutive model of XM23 glue provides theoretical and data support for the finite element simulation of XM23 glue bonded structures.

关 键 词：XM23胶 单轴拉伸 超弹性本构模型 有限元仿真 

分 类 号：TH145.41[一般工业技术—材料科学与工程]