The Residual Stress State Generated by Single Point Incremental Forming of Aluminum Metal Sheets

Maria Crina Radu; Eugen Herghelegiu; Catalin Nicolae Tampu; Ion Cristea

doi:10.4028/www.scientific.net/AMM.371.148

Paper Titles

Surface Integrity of Ti6Al4V Alloy under Dry Sliding Conditions
p.126

Determination of Technological Forces in the Incremental Forming Process
p.133

Applying the Networks Division Method for Studying the State of Deformation of Semi-Finished Sheet Submitted to Technological Cutting Operations
p.138

Influence of the Blankholder Force on the Accuracy of the Rectangular Drawn Parts Made from Steel Sheets
p.143

The Residual Stress State Generated by Single Point Incremental Forming of Aluminum Metal Sheets
p.148

Influence of the Clearances in the Stamping Device upon the Burrs Resulted on the Stamped Bearing Cages Windows
p.153

Simulation of the Pressing Process with Combined Forces by Using ABAQUS Software
p.158

Influence of the Thickness Value on the Mechanical and Formability Properties of the CuZn37 Thin Sheet Metal
p.163

Experimental Researches on the Limit Angle of Conical Parts Manufactured by Single Stage Incremental Forming on CNC Lathes
p.168

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 371The Residual Stress State Generated by Single...

The Residual Stress State Generated by Single Point Incremental Forming of Aluminum Metal Sheets

Abstract:

Single point incremental forming (SPIF) is a process during which at any moment a very small part of the sample is actually being formed. This progressive highly localised deformation is performed by a simple tool, whose trajectory is numerical controlled by a CNC machine. Since no support for the metal sheet is used during forming, large levels of deformation occur, which in turn, induce highly non-uniform residual stresses that affect the accuracy of the processed parts. The aim of the present paper was to inspect, experimentally and by simulation, the state of the residual stresses induced in SPIFed double frustums of pyramids made by A1050. The hole drilling method was used for the experimental measurements and the LS-Dyna software for simulation.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 371)

Pages:

148-152

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.371.148

Citation:

Cite this paper

Online since:

August 2013

Authors:

Maria Crina Radu, Eugen Herghelegiu, Catalin Nicolae Tampu, Ion Cristea

Keywords:

Hole Drilling Method, Residual Stress, Simulation, SPIF

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] P.J. Withers, H.K.D.H. Bhadeshia, Residual stress. Part 1 – Measurement techniques, Mater. Sci. Technol. 17 (2001) 355-365.

Google Scholar

[2] N. Huber, J. Heerens, On the effect of a general residual stress state on indentation and hardness testing, Acta Materialia 56 (2008) 6205–6213.

DOI: 10.1016/j.actamat.2008.08.029

Google Scholar

[3] D. van Aken, Residual stress, Industrial Heating. The International Journal of Thermal Technology, 67 (2000) 20.

Google Scholar

[4] S. Tanaka, T. Nakamura, K. Hayakawa, H. Nakamura, K. Motomura, Residual stress in sheet metal parts made by incremental forming process, in: Proceedings of the Numiform'07 Conference, Porto, Portugal, June 17-21, 2007, 775-780.

DOI: 10.1063/1.2740904

Google Scholar

[5] J.M. Allwood, D. Braun, O. Music, The effect of partial cut-out blanks on geometric accuracy in incremental sheet forming, J. Mater. Process. Tech. 210 (2010) 1501-1510.

DOI: 10.1016/j.jmatprotec.2010.04.008

Google Scholar

[6] P.D. Bârsănescu, F. Mocanu, L. Bejan, C. Bitca, Resistive electric tensometry applied to composite materials, Tehnopress Publishing House, Iasi, 2004 (in Romanian).

Google Scholar

[7] Oettel R., The determination of uncertainties in residual stress measurement (using the hole drilling technique), Manual of codes of practice for the determination of uncertainties in mechanical tests on metallic materials, Code no. 15, Issue 1, Dresden, Germany, (2000).

Google Scholar

[8] ** 85ASTM E 837-99, Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage Method, 1-10.

DOI: 10.1520/e0837-01e01

Google Scholar

[9] C. Radu, C. Tampu, I. Cristea, B. Chirita, The effect of residual stresses on the accuracy of parts processed by SPIF, submitted to Materials and Manufacturing Processes (2012).

DOI: 10.1080/10426914.2013.763967

Google Scholar

[10] www. sintechnology. com accessed on 21. 02. (2013).

Google Scholar

[11] LS-DYNA Keyword user's manual, Vol. 1, Livermore Software Technology Corporation (LSTC), 29. 37 (section) , (2007).

Google Scholar