摘要
为了解自润滑关节轴承织物衬垫的拉伸性能,对其拉伸性能进行了数值仿真与试验验证。通过进行切片试验,利用激光共聚焦显微镜观测纤维截面形态,对截面形貌轮廓尺寸进行测量计算,得到了纤维束的几何参数,利用ANSYS有限元软件建立了织物衬垫增强相单胞模型;基于复合材料细观力学方法和周期性边界条件,研究了织物衬垫拉伸性能,利用ANSYS得出了聚四氟乙烯(PTFE)/芳纶(Kevlar)混织破斜纹衬垫的拉伸弹性常数;并将数值仿真分析结果与拉伸试验结果对比,结果相差约20%,在误差允许范围内。
In order to understand the tension property of the fabric liner for self-lubricating spherical plain bearings,numerical simulations and experiment verification of the tensile properties were investigated.First of all,the section testing was performed,and laser scanning confocal microscopy（LSCM） was used to observe the section morphology of fibers.By measuring and calculating for the profile,the geometry parameters of the fibers were obtained.The reinforcementunit-cell model of the fabric liner was built using ANSYS finite element software.Then,based on the mesomechanics of composite materials and the periodic boundary conditions,the tensile properties of the fabric liner were studied and the tensile elastic constants of the hybrid polytetrafluoroethylene（PTFE） / Kevlar broken twill fabric liner were obtained using ANSYS.At last,comparison of the experimental results and the simulated ones shows that the error is about 20%,which is within the allowed range.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2016年第7期71-76,共6页
Journal of Textile Research
关键词
织物衬垫
细观模型
拉伸试验
有限元仿真
broken twill fabric liner
mesoscopic model
tensile testing
finite element simulation
