摘要
基于一种适用于平纹涤纶增强橡胶复合材料的各向异性超弹性本构模型,将应变能分解为橡胶基体应变能、织物纤维拉伸应变能与织物增强橡胶剪切应变能3部分,并根据单轴拉伸试验数据确定了本构模型参数。编写了有限元材料子程序进行仿真分析,并与试验数据对比验证了本构模型的合理性。该模型从宏观出发,能更好地表征复合材料编织物在拉伸过程中由于大变形所引起的非线性各向异性力学行为,具有结果准确、简单实用等优点,为织物增强橡胶复合材料的设计应用提供了理论依据。
Based on the anisotropic hyperelastic constitutive model of plain polyester reinforced rubber composites, the strain energy is decomposed into three parts: rubber matrix strain energy, fabric fiber tensile strain energy and fabric reinforced rubber shear strain energy, and parameters of the constitutive model are determined by uniaxial tensile tests. The algorithm of ABAQUS UANISOHYPER_INV is introduced to analyze the hyperelastic behaviors, and verified by comparison with experimental data. The nonlinear anisotropic behavior of the fabric can be better characterized by the proposed macroscopic model, which is caused by the large deformation during the tensile process. We can use the anisotropic hyperelastic constitutive model to obtain an accurate prediction result simply and practically. The proposed model also provides a theoretical basis for the design of fabric reinforced rubber composites.
作者
毛金威
王新峰
宋豪鹏
于健
MAO Jinwei;WANG Xinfeng;SONG Haopeng;YU Jian(College of Aerospace Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;College of General Aviation and Flight,Nanjing University of Aeronautics&Astronautics,Nanjing 211106,China)
出处
《南京航空航天大学学报》
CAS
CSCD
北大核心
2023年第1期28-34,共7页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
复合材料
橡胶
织物增强复合材料
各向异性本构模型
超弹性
有限元法
composite material
rubber
fabric reinforced composites
anisotropy constitutive model
hyperelasticity
finite element method(FEM)
