同济大学学报（自然科学版）2018，Vol.46Issue(2)：177-181,5.DOI:10.11908/j.issn.0253-374x.2018.02.005
直角梯形ETFE气枕塑性成形试验与数值分析
Plastic-forming Experiment and Numerical Analysis of Right Angled Trapezoid ETFE Cushions
摘要
Abstract
Plastic-forming based on plat-patterning is applicable to ethylene tetrafluoroethylene (ETFE) cushions owing to the good plasticity property of ETFE foils.Two right angled trapezoidal ETFE cushion models were designed and manufactured.Cushion forming and cyclic inflating-deflating tests of the two ETFE cushion models were carried out by employing a pressure control system.Vertical displacements on the lower surface were measured by laser displacement transducer.The results indicate that rise-to-span ratios of the two cushions are respectively 1/9.4 and 1/10.3 with 2 kPa being the maximum internal pressure of plastic-forming.In addition,the ETFE foils were strengthened during the forming process.A multi-linear elastic-plastic model with isotropic hardening in ANSYS was employed to numerical analyses of the forming and cyclic inflating-deflating processes,and the results were compared with the experimental data.关键词
ETFE气枕/塑性成形/平面裁剪/充气试验/数值分析Key words
ethylene tetrafluoroethylene (ETFE) cushion/plastic-forming/plat-patterning/inflating and deflating test/numerical analysis分类
建筑与水利引用本文复制引用
胡洪铭,吴明儿,刘以婷..直角梯形ETFE气枕塑性成形试验与数值分析[J].同济大学学报（自然科学版）,2018,46(2):177-181,5.基金项目
国家自然科学基金(51478333) （51478333）
