Volume 19, Issue 2 (2019)                   Modares Mechanical Engineering 2019, 19(2): 259-268 | Back to browse issues page

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Roohi H, Deilami Azodi H, Safari M. Investigation on Forming Limit of Aluminum Sheet in Warm Incremental Forming Process. Modares Mechanical Engineering. 2019; 19 (2) :259-268
URL: http://journals.modares.ac.ir/article-15-21916-en.html
1- Manufacturing Department, Mechanical Engineering Faculty, Arak University of Technology, Arak, Iran
2- Manufacturing Department, Mechanical Engineering Faculty, Arak University of Technology, Arak, Iran , hdazodi@arakut.ac.ir
Abstract:   (2068 Views)
Incremental sheet forming is one of the novel processes which is used for rapid prototyping and manufacturing of parts with complex geometries. Forming limit of sheet metal in this process is high compared to other conventional forming processes. In this paper, warm single-point incremental forming process through uniform heating to sheet along with tool heating is studied experimentally and numerically. Formability of sheet is investigated in various process condition based on the straight groove test in experimental approach and numerical simulation using finite element method. Tool heating along with uniform heating to sheet makes tool and sheet isothermal, reduces the heat loss in deformation zone and improves the deformation process. So, attainment of high forming limit is made possible. Comparison of forming limit diagrams obtained from experimental and numerical approaches shows a good agreement between the results. Effects of temperature and feed rate on the forming limit of aluminum 1050 sheet are investigated. Results show that increasing the temperature improves the formability of sheet significantly; but, the temperature is more influential on forming limit in low feed rates. Increasing the feed rate reduces the forming limit slightly; this effect is more evident in higher temperatures.
 
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Received: 2018/06/10 | Accepted: 2018/10/8 | Published: 2019/02/17

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