This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Punch Shapes and Cutting Configurations on the Dimensional Accuracy of Punched Holes on an AHSS Sheet
Technical Paper
2018-01-0800
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Dimensional accuracy of punched hole is an essential consideration for high-quality sheet metal forming. An out-of-shape hole can give rise to manufacturing issues in the subsequent production processes thus inducing quality defects on a vehicle body. To understand the effects of punch shapes and cutting configurations on punched hole diameter deviations, a systematical experimental study was conducted for multiple types of AHSS (DP1180, DP980, DP590) and one mild steel. Flat, conical and rooftop punches were tested respectively with three cutting clearances on each material. The measurement results indicated different diameter enlargement modes based on the punch profiles, and dimensional discrepancies were found to be more significant with the stronger materials and higher cutting clearance. To uncover the mechanism of punched hole enlargement, a series of finite element simulations were established for numerical investigation. The diameter change is mainly owing to the spring-back for the additional material deformation induced by punch tip. Its consequent benefits for tool protection from punching induced enlargement will be also discussed.
Recommended Content
Authors
Citation
Pu, C., Jia, Y., Zhou, D., Makrygiannis, P. et al., "Effects of Punch Shapes and Cutting Configurations on the Dimensional Accuracy of Punched Holes on an AHSS Sheet," SAE Technical Paper 2018-01-0800, 2018, https://doi.org/10.4271/2018-01-0800.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 |
Also In
References
- Pu , C. and Gao , Y. Crystal Plasticity Analysis of Stress Partitioning Mechanisms and their Microstructural Dependence in Advanced Steels Journal of Applied Mechanics 82 3 031003 2015 10.1115/1.4029552
- Karjalainen , J.A. , Mäntyjärvi , K. , and Juuso , M. Punching Force Reduction with Wave-Formed Tools Key Engineering Materials 344 209 216 2007 10.4028/www.scientific.net/KEM.344.209
- Kutuniva , K. , Karjalainen , J.A. , and Mäntyjärvi , K. Effect of Convex Sheared Punch Geometry on Cutting Force of Ultra-High-Strength Steel Key Engineering Materials 504-506 1359 1364 2012 10.4028/www.scientific.net/KEM.504-506.1359
- Shih , H.-C. , Chiriac , C. , and Shi , M.F. The Effects of AHSS Shear Edge Conditions on Edge Fracture MSEC Paper ( 2010-34062 ) 2010
- Shih , H.-C. , Zhou , D. , and Konopinski , B. Effects of Punch Configuration on the AHSS Edge Stretchability SAE International Journal Engines 10( 2017-01-1705 ) 2017
- Shih , H.-C. and Shi , M.F. An Innovative Shearing Process for AHSS Edge Stretchability Improvements Journal of Manufacturing Science and Engineering 133 6 61018 2011
- Yang , G. , Bai , T. , Xu , W. , Li , J. et al. Dimension Study of Punched Hole Using Conical Tipped Punches, SAE 2016 World Congress and Exhibition SAE International 2016 10.4271/2016-01-0364
- Pu , C. , Gao , Y. , Wang , Y. , and Sham , T.-L. Diffusion-Coupled Cohesive Interface Simulations of Stress Corrosion Intergranular Cracking in Polycrystalline Materials Acta Materialia 136 21 31 2017 10.1016/j.actamat.2017.06.058
- Tian , L. , Russell , A. , and Anderson , I. A Dislocation-Based, Strain-Gradient-Plasticity Strengthening Model for Deformation Processed Metal-Metal Composites Journal of Materials Science 49 7 2787 2794 2014
- Tan , L. Multiple length and time-scale approaches in materials modeling Advance Material 6 1 9 2016 10.11648/j.am.s.2017060101.11
- Tan , L. , Acharya , A. , and Dayal , K. Modeling of Slow Time-Scale Behavior of Fast Molecular Dynamic Systems Journal of the Mechanics and Physics of Solids 64 1 24 43 2014 10.1016/j.jmps.2013.10.013
- Tian , L. , Anderson , I. , Riedemann , T. , and Russell , A. Modeling the Electrical Resistivity of Deformation Processed Metal-Metal Composites Acta Materialia 77 151 161 2014 10.1016/j.actamat.2014.06.013
- Subramonian , S. , Altan , T. , Ciocirlan , B. , and Campbell , C. Optimum Selection of Variable Punch-Die Clearance to Improve Tool Life in Blanking Non-symmetric Shapes International Journal of Machine Tools and Manufacture 75 63 71 2013 10.1016/j.ijmachtools.2013.09.004
- Falconnet , E. , Chambert , J. , Makich , H. , and Monteil , G. Prediction of Abrasive Punch Wear in Copper Alloy Thin Sheet Blanking Wear 338-339 144 154 2015 10.1016/j.wear.2015.06.007
- Hu , Z. , Lu , W. , Thouless , M.D. , and Barber , J.R. Simulation of Wear Evolution Using Fictitious Eigenstrains Tribology International 82 191 194 2015
- Hu , Z. , Lu , W. , and Thouless , M.D. Slip and Wear at a Corner with Coulomb Friction and an Interfacial Strength Wear 338 242 251 2015
- Jia , Y. and Bai , Y. Ductile Fracture Prediction for Metal Sheets Using all-Strain-Based Anisotropic eMMC Model International Journal of Mechanical Sciences 115-116 516 531 2016 10.1016/j.ijmecsci.2016.07.022
- Jia , Y. , Wang , Y. , and Bai , Y. A New Combined Isotropic, Kinematic and Cross Hardening Model for Advanced High Strength Steel under Non-Linear Strain Loading Path SAE International Journal of Engines 10 2 382 390 2017 10.4271/2017-01-0367
- Matsuno , T. , Sato , K. , Okamoto , R. , Mizumura , M. , and Suehiro , M. Synergy Effect of Shear Angle and Anisotropic Material Ductility on Hole-Expansion Ratio of High-Strength Steels Journal of Materials Processing Technology 230 167 176 2016 10.1016/j.jmatprotec.2015.10.018
- Jia , Y. and Bai , Y. Experimental Study on the Mechanical Properties of AZ31B-H24 Magnesium Alloy Sheets under Various Loading Conditions International Journal of Fracture 197 1 25 48 2016
- Hedrick , A. Die Science: Slug Pulling-Causes and Solutions Stamping. Journal 2015