摘要
管状纺织复合材料作内衬管修复受损管道,是通过气压或水压翻转衬于管道中的,在翻衬过程中,由于翻衬压强的作用,管状纺织复合材料要承受复杂的应力与应变。本文中通过有限元方法对管状纺织复合材料翻衬时的应力和应变情况进行了分析,而且有限元模拟值分别与理论值和试验值进行了比较。结果表明:管状纺织复合材料在翻转时,翻转的头端,应力和应变不稳定,有应力集中的情况,因此在翻转头端最容易发生管状纺织复合材料的破裂;在管状纺织复合材料几何参数与组分材料一定的情况下,可通过有限元方法,给出不同翻衬压强值下其可修复管道的管径范围。
The tubular textile composite material as the liner is inversed in the pipeline by gas or water pressure,so that the damaged pipeline can be rehabilitated.During inversion,because of the inversion pressure,the tubular textile composite material must endure the complicated stress and strain.Adopting the finite element method,the paper analyzed the stress and strain of the tubular textile composite material during inversion,and the finite element simulation data are compared respectively with theory data and test data.The results show that the stress and strain in the head of the tubular textile composite material during inversion is instable,where the stress is concentrative,so the head of tubular textile composite material is easy to break;when the geometry parameter and component material of the tubular textile composite material are determined,the scope of diameter of the pipeline,within which the tubular textile composite material can be repaired is confirmed by the finite element method.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2009年第5期178-185,共8页
Acta Materiae Compositae Sinica
基金
天津市高等学校科技发展基金计划项目(ZD200720)
关键词
管道修复
管状纺织复合材料
应力
应变
有限元模拟
pipeline rehabilitation
tubular textile composite material
stress
strain
finite element simulation
