시뮬레이션을 통한 열성형에서의 필름 평균두께 계산

In this study, numerical simulation of the thermoforming process of PVC film material was performed using PAM-Form. For this purpose, tensile tests were performed at various temperatures and the coefficients of the G’Sell model were obtained and used. As a result of the analysis, it was confirmed that the thickness decreased by up to 55% in the section where the film was in contact with the vertical direction and was greatly stretched. If the thickness is excessively thin, the part may become structurally weak, so in the thermoforming process, numerical simulation of the thickness in advance is expected to be helpful in successfully performing the process.