Transactions of Materials and Heat Treatment

Title：Research on cold bending process for variable cross-section corrugated plate by finite element simulation

Authors： Cao Junjie1 Liu Tianhui1 Cui Jing2

Unit： (1.Industrial Training Centre Shenzhen Polytechnic University Shenzhen 518055 China 2.Undergraduate Education College Shenzhen Polytechnic University Shenzhen 518055 China)

KeyWords： cold bending variable cross-section corrugated plate wrinkle defect flat section corrugated section

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2025,50(4):147-159

Abstract：

Abstract: For the variable cross-section corrugated plate, the cold bending process was studied by finite element simulation software， and the equivalent stress and equivalent strain distribution and the stress-strain history curves during the cold bending process were analyzed. Then， the top sheet was divided into three parts of flat section， transition section and corrugated section.And the stress， strain and displacement curves of typical nodes in each part were compared and analyzed.Furthermore， the causes of wrinkle defects in the flat section of corrugated plate and the influences of process parameters on the wrinkle defect area discussed.The results show that during the cold bending process， the equivalent stress and equivalent strain values at the corner area and its vicinity are significantly higher than those in other areas， and the forming of corner area should be paid attention to. Due to the different distribution of the lateral metal flow of plate in the corrugate section and the flat section of corrugated sheet， the wrinkle

defect occurs in the flat section， and the size of wrinkle defect is mainly related to the length of transition section. Thus， this study provides a theoretical basis for the large-scale production of cold bending for variable cross-section corrugated plate.

Funds：

基金项目:国家自然科学基金资助项目(51801026)

作者简介：曹俊杰(1989-)，男，硕士，实验师

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