摘要
Abstract
The main failure mode of the film forming in the pressure bulging process is wrinkle and burst. By constructing pressure bulging study object of PET film,build up test bench to acquire burst pressure and burst position when the film is burst. By uniax-ial tensile test,obtain the stress-strain curve of the PET film at room temperature,solve the parameters of three-parameter model according to the curve,using the Fortran language to write program of the PET film three-parameter model,import the program in-to the ABAQUS software for finite element analysis. By free bulging simulation and experimental contrast analysis,the three-pa-rameter model could accurately reflect the bulging forming property of PET film. Then through finite element simulation,analyzing failure occurred in the experiment by stress & thickness distribution in the PET forming process,provide theoretical guidance for process scheme and structure design of PET film pressure bulging.关键词
压力胀型/PET膜片/破裂失效/有限元分析/三参数模型/应力和厚度分布Key words
pressure bulging/PET film/burst-failure/finite element analysis/three-parameter model/stress&thickness distribution分类
化学化工
