建筑结构学报2018，Vol.39Issue(3)：12-18,7.DOI:10.14006/j.jzjgxb.2018.03.002
ETFE气枕平面充气成形过程的非线性结构性能分析
Nonlinear structural performance analysis of ETFE cushion in form-developing by inflation method through flat-patterning
摘要
Abstract
An experiment on fiat-patterning-based ETFE (ethylene-tetrafluoroethylene) cushion was conducted.Laser displacement sensors were used to measure the rises of ETFE cushion and the stress distributions were calculated using the shape geometry obtained from 3D photo grammetry.The Peirce model was applied to reflect the property of the material mechanical nonlinearity of the ETFE foil,and numerical simulation was performed to replicate the process of inflation.The rise of the ETFE cushion and the stress distributions obtained from the numerical simulation were compared with the test results.The results show that the Peirce model gives good prediction on the stress-strain relationship of ETFE foils,except in the location between the two yield points.The final rise of the ETFE cushion reaches about 172 mm,where the maximum stress points of ETFE cushion are located at the mid-span of each edge.The discrepancies related to the membrane displacement,stress and strain between the numerical and experimental results are less than 10％.In addition,the numerical simulation shows that plastic strains exist under an internal pressure of 2 kPa,and the maximum total strain and plastic strain of the ETFE cushion are located at the membrane center and the mid-span of each edge.关键词
EFFE气枕/平面裁切/充气成形试验/材料力学非线性/Peirce模型/膜面应力/膜面应变Key words
EFFE cushion/fiat-patterning/form-developing test by inflation/material mechanical nonlinearity/Peirce model/stress on membrane/strain on membrane分类
建筑与水利引用本文复制引用
阴悦,胡建辉,陈务军,赵兵,杨德庆..ETFE气枕平面充气成形过程的非线性结构性能分析[J].建筑结构学报,2018,39(3):12-18,7.基金项目
国家自然科学基金项目(51478264,51608320,51708345),博士后科学基金项目(2017T100298). （51478264,51608320,51708345）
