An Investigation of Springback Stresses in Deep-Drawn Cups Using Diffraction Techniques
2005-01-0498
04/11/2005
- Event
- Content
- Prediction of springback has become a major focus in sheet metal forming. Validation of finite element codes that are being developed to predict springback require accurate property data and a more complete understanding of the residual stresses that are involved. To provide experimental data for these calculations, neutron and synchrotron X-ray diffraction measurements were carried out to determine the through-thickness distribution of axial and hoop (or tangential) residual stresses in deep-drawn steel and aluminum cups. The techniques are able to provide true spatial resolutions as low as 0.05 mm for a strain measurement on cups with ≤ 1 mm wall thickness. It was found that the stresses exhibit non-linear gradients through the thickness that also depend on the axial position.
- Pages
- 10
- Citation
- Gnaeupel-Herold, T., Foecke, T., Prask, H., Fields, R. et al., "An Investigation of Springback Stresses in Deep-Drawn Cups Using Diffraction Techniques," SAE Technical Paper 2005-01-0498, 2005, https://doi.org/10.4271/2005-01-0498.