Incremental analysis of springback and kinematic hardening by the variation of tension during deep drawing

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Authors

Springback is considered as one of the major problems in sheet metal forming. It leads to assembly defects and cause a huge amount of cost for tool modifications. In this work a tool for incremental analysis of springback analysis has been presented. Development of springback with punch travel has been analyzed for the simple U draw-bend geometry, tunnel geometry with open base and modified tunnel geometry with closed base and variable flange height. The effect of tension variation in the sheet with punch travel has been considered as the steering parameter for the springback and various profiles of varying tension are studied, which would generate different tensile forces in sheet. It is found that the tension in the part in the last quarter of punch travel has a profound effect on the springback reduction as compared to the traditionally applied constant BHF. Two selected kinematic hardening models, namely Yoshida-Uemori(YU) model and Armstrong-Frederick(AF) model are used to study the coupled effects of tension and material hardening.
Original languageEnglish
JournalAIP Conference Proceedings
Volume1567
Issue number1
Pages (from-to)709-712
Number of pages4
DOIs
Publication statusPublished - 2013
Externally publishedYes

Bibliographical note

Numisheet 2014, Melbourne, Australia

DOI

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