Comparative Study of Springback in Different Sheet Metal Alloys and Thicknesses in V-Shaped Bending Process

Abstract:

The V-bending process is one of the most important operations in sheet formation, which is influenced by a number of different factors. The phenomenon of springback is a well-known issue within the field of sheet metal forming, resulting in compromised dimensional accuracy and reduced operational efficiency. The objective of this research is to analyse and compare the springback properties exhibited by different types of sheet metal alloys (aluminium alloy 6061-T6, stainless steel 304, and low-carbon steel) with thicknesses (0.5, 1, 1.5, 2, 2.5 and 3) mm. The springback angle of each sample is subsequently evaluated quantitatively using a measuring machine of coordinate. A regression model is developed to predict the incidence of springback by using the variables of material properties and forming conditions. The results suggest that there is a significant variability in the springback phenomena, which is influenced by the particular alloy and thickness of the material. Specifically, the low-carbon steel has got the least springback, followed by SS 304, and Al 6061-T6. The thickness of the material has the greatest influence on the process (54%), followed by the type of material (37%). In contrast to the largest thickness of 3 mm, the maximum value of reflectivity is found in all three materials employed in this investigation, the smallest thickness of 0.5 mm provides the least amount of springback.

• Periodical: Applied Mechanics and Materials (Volume 928)
• Pages: 3-9
• DOI: https://doi.org/10.4028/p-RlC8bW
• Online since: November 2025
• Authors: Ahmed Rahman Khudadad, Safaa Kadhim Ghazi, Rasool R.K. Al-Arkawazi*, Mudhar A. Al-Obaidi, Mostafa Adel Abdullah
• Keywords: Low-Carbon Steel, Regression Model, Sheet Metal Forming, Springback, V-Bending Process

References

[1] Yanagimoto, J. and Oyamada, K., 2006. Springback-free isothermal forming of high-strength steel sheets and aluminum alloy sheets under warm and hot forming conditions. ISIJ international, 46(9), pp.1324-1328.

DOI: 10.2355/isijinternational.46.1324

[2] Zecevic, M. and Knezevic, M., 2023. Origins of improved elongation to fracture in cyclic bending under tension of AA6022-T4 sheets as revealed using crystal plasticity modeling. Mechanics of Materials, 177, p.104546.

DOI: 10.1016/j.mechmat.2022.104546

[3] Ismail, Firas B., Nizar FO Al-Muhsen, and L. Sarravanan Linganathan. "Design and fabrication of mechanical power generation systems using footsteps." International Journal of Electrical and Electronic Engineering & Telecommunications 9.3 (2020): 183-8.

DOI: 10.18178/ijeetc.9.3.183-188

[4] Al-Muhsen, Nizar FO, et al. "Analytical design and computational fluid dynamics analysis for optimizing fixed ventilation systems for power transformer: Numerical study and experimental validation." Numerical Heat Transfer, Part A: Applications (2024): 1-19.‏

DOI: 10.1080/10407782.2024.2373395

[5] Zein, H., El Sherbiny, M. and Abd-Rabou, M., 2014. Thinning and spring back prediction of sheet metal in the deep drawing process. Materials and Design, 53, pp.797-808.

DOI: 10.1016/j.matdes.2013.07.078

[6] Sharad, G. and Nandedkar, V.M., 2014. Springback in sheet metal u bending-Fea and neural network approach. Procedia materials science, 6, pp.835-839.

DOI: 10.1016/j.mspro.2014.07.100

[7] Mithu, M.A.H., Karim, M.A., Taj, F.A. and Rahman, A., 2025. Predicting springback in V-bending: Effects of load, load holding time, and heat treatment on common sheet-metal forming operations. Materials Today Communications, p.111668.

DOI: 10.1016/j.mtcomm.2025.111668

[8] Phaoniam, R. and Lawanwong, K., 2024. Effect of weld-line position on springback behavior in advanced high-strength steel tailor-welded blanks on hat-shaped bending application. Journal of Advanced Joining Processes, 10, p.100241.

DOI: 10.1016/j.jajp.2024.100241

[9] Knezevic, M., 2024. Crystal plasticity-based finite element simulations of load reversals and hat-shaped draw-bending for predicting the springback behavior of dual-phase steel sheets. International Journal of Solids and Structures, p.112924.

DOI: 10.1016/j.ijsolstr.2024.112924

[10] Sarkar, M.Z., Sargeant, D., Sharma, R., Knezevic, M., David, F. and Miles, M., Effect of Pre-Strain on Springback Behavior after Air Bending in Aa 6016-T4: Influence of Dislocation Density and Backstress on Prediction Accuracy. Available at SSRN 4682286.

DOI: 10.2139/ssrn.4682286

[11] Chalal, H., Racz, S.G. and Balan, T., 2012. Springback of thick sheet AHSS subject to bending under tension. International Journal of Mechanical Sciences, 59(1), pp.104-114.

DOI: 10.1016/j.ijmecsci.2012.03.011

[12] Abdullah, Mostafa A., T. F. Abbas, "Numerical Developing the Internet of Things to Remotely Monitor the Performance of a Three Dimensions Printer for Free-Form Surface," J. Eng. Sci. Technol., vol. 18, no. 6, p.2809–2822, 2023

DOI: 10.18517/ijaseit.14.2.19863

[13] Muhsin, S.A., Hummudi, I.M. and Al-Ani, M.A., 2022. Estimate Zinc-Oxide particles on PMMA mechanical properties. Journal of Techniques, 4(2), pp.32-37.

DOI: 10.51173/jt.v4i2.450

[14] Abdullah, M.A., Ahmed, B.A. and Ghazi, S.K. 2024. Enhancing of Material Removal Rate and Surface Roughness in Wire EDM Process using Grey Relational Analysis. Engineering, Technology and Applied Science Research. 14, 5 (Oct. 2024), 17422–17427.

DOI: 10.48084/etasr.8450

[15] Ghazi, S.K., Abdullah, M.A. and Abdulridha, H.H. 2025. Investigating the Impact of EDM Parameters on Surface Roughness and Electrode Wear Rate in 7024 Aluminum Alloy. Engineering, Technology & Applied Science Research. 15, 1 (Feb. 2025), 19401–19407

DOI: 10.48084/etasr.9252