聚四氟乙烯/芳纶破斜纹织物衬垫拉伸性能数值仿真  

Numerical simulation of tensile properties of polytetrafluoroethylene/Kevlar broken twill fabric liner

作　　者：王占山[1,2] 吕利叶 张佳丽 杨育林[1,2] 张芳芳[1] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]燕山大学自润滑关节轴承共性技术航空科技重点实验室,河北秦皇岛066004 [3]全兴工业研发(廊坊)有限公司,河北廊坊065000

出　　处：《纺织学报》2016年第7期71-76,共6页Journal of Textile Research

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.

关 键 词：织物衬垫 细观模型 拉伸试验 有限元仿真 

分 类 号：TB332[一般工业技术—材料科学与工程]