TY - GEN
T1 - A NUMERICAL STUDY ON SPRINGBACK OF A CHANNEL THROUGH THE OSCILLATION OF PUNCH
AU - Nikhare, Chetan P.
AU - Buddi, Tanya
AU - Kotkunde, Nitin
AU - Singh, Swadesh Kumar
N1 - Funding Information:
Authors would like to thank Penn State Erie, The Behrend College for support provided to perform this research and its unique open lab research facility. The authors would also like to thank Nancy Morse Sonner and Sally Morse Dale from The M. K. Morse Company for funding the conference registration.
Publisher Copyright:
Copyright © 2021 by ASME
PY - 2021
Y1 - 2021
N2 - To meet the demand of light weighting, environmental regulation, increase fuel economy, many innovations are underway. Options are light weighting the part to reduce the fuel consumption or decrease the gage in high strength dense material. In both cases during or after deforming the part these challenges occur like higher tonnage machine for deformation, sudden fracture, geometric defect, etc. One of the geometric defects which is very common in sheet metal forming is springback. Springback is the deviation of the part from the desired shape after the part is shaped and then load is released. It is the material tendency to relaxed back based on the accumulated strain and its elasticity. In lighter material or higher strength steels, the springback phenomena is very common due to lower elasticity or higher strength value. In this paper springback is analyzed by conceptualizing an innovative process. The innovative process is oscillation of the punch after the forming process is done. The 2D channel strip of the aluminum 2024 high strength alloy was used in the bending process. The process of bending with punch die and the blank was modeled in the ABAQUS finite element software. First, the conventional channel deformation was performed, and the deformation was studied and springback was compared with the desired shape. Then the oscillation of the punch was set either in the longitudinal or lateral direction. The frequency of the punch was also been changed to see the effect on the deformation behavior of the material and springback after the punch release. The residual stress during the process was studied and compared. Further the maximum stress, deformation of the channel and springback was analyzed and presented. It was found that the punch oscillation contributes in reducing the springback.
AB - To meet the demand of light weighting, environmental regulation, increase fuel economy, many innovations are underway. Options are light weighting the part to reduce the fuel consumption or decrease the gage in high strength dense material. In both cases during or after deforming the part these challenges occur like higher tonnage machine for deformation, sudden fracture, geometric defect, etc. One of the geometric defects which is very common in sheet metal forming is springback. Springback is the deviation of the part from the desired shape after the part is shaped and then load is released. It is the material tendency to relaxed back based on the accumulated strain and its elasticity. In lighter material or higher strength steels, the springback phenomena is very common due to lower elasticity or higher strength value. In this paper springback is analyzed by conceptualizing an innovative process. The innovative process is oscillation of the punch after the forming process is done. The 2D channel strip of the aluminum 2024 high strength alloy was used in the bending process. The process of bending with punch die and the blank was modeled in the ABAQUS finite element software. First, the conventional channel deformation was performed, and the deformation was studied and springback was compared with the desired shape. Then the oscillation of the punch was set either in the longitudinal or lateral direction. The frequency of the punch was also been changed to see the effect on the deformation behavior of the material and springback after the punch release. The residual stress during the process was studied and compared. Further the maximum stress, deformation of the channel and springback was analyzed and presented. It was found that the punch oscillation contributes in reducing the springback.
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U2 - 10.1115/IMECE2021-70171
DO - 10.1115/IMECE2021-70171
M3 - Conference contribution
AN - SCOPUS:85124395556
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Advanced Manufacturing
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021
Y2 - 1 November 2021 through 5 November 2021
ER -