Optimization of Spot-Welds on Patchwork Blank for Hot Forming Process

M. A. Ahmad; A. Zakaria

doi:10.4028/www.scientific.net/AMM.606.177

Paper Titles

Experimental Investigation on Dynamic Characteristics of Polypropylene Honeycomb Sandwich Structures under the Influences of Different Temperatures
p.153

R-Curve Modelling of Mode I Delamination in Multidirectional Carbon/Epoxy Composite Laminates
p.159

Fracture Characteristics of Shear Adhesive Dissimilar Joint
p.165

Springback-Free Sheet Metal Structural Part Design by Topography Optimization
p.171

Optimization of Spot-Welds on Patchwork Blank for Hot Forming Process
p.177

Crush Characteristics and Energy Absorption of Thin-Walled Tubes with Through-Hole Crush Initiators
p.181

Investigation of Annular Gap Size for Optimizing the Dynamic Range of MR Damper Using Comsol Multiphysics Software
p.187

Optimization of Surface Roughness in Electro Chemical Machining
p.193

Evaluating the Effect of Main Factors in Manufacturing Production Line Based on Simulation Experiment
p.199

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 606Optimization of Spot-Welds on Patchwork Blank for...

Optimization of Spot-Welds on Patchwork Blank for Hot Forming Process

Abstract:

Patchwork blank is usually comprised of two different thickness of HSS sheet metals spot welded on top each other. Designed to provide an increased stiffness, it is widely used in many structural formed parts. The correct number of spot-welds is important in terms of cost and safety. In this study, the effects of spot-weld locations on an automotive part called B-Pillar with patchwork blank design was investigated by numerical hot forming simulation. The spot weld was modeled as a rigid link between parent blank and additional blank. Throughout the forming simulation, maximum stress and formability of the part were monitored. The same procedure was repeated for different spot-weld number and location. An optimum number of the spot-weld was then determined by the onset of wrinkle disappearance. Performance of the optimized spot-weld part was validated by actual part.

You might also be interested in these eBooks

Materials, Industrial and Manufacturing Engineering Research Advances 1.2

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 606)

Pages:

177-180

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.606.177

Citation:

Cite this paper

Online since:

August 2014

Authors:

M. A. Ahmad, A. Zakaria*

Keywords:

Forming Simulation, Hot Forming, Patchwork Blank

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] Cheon, and S. Sik, Composite Side-door Impact B-Pillar for Passenger Cars, Vol. 38, No. 1-4, pp.229-239, (1997).

DOI: 10.1016/s0263-8223(97)00058-5

Google Scholar

[2] J. Aspacher, Forming Hardening Concepts, 1st International Conference on Hot Sheet Metal Forming of High-Performance Steel, Kassel, Germany, pp.77-81, (2008).

Google Scholar

[3] A. Naganathan, L. Penter, Hot Stamping: Sheet Metal Forming, Process and Application, Chapter 7, (2012).

DOI: 10.31399/asm.tb.smfpa.t53500133

Google Scholar

[4] P. Hu, N. Ma, L. Liu, Z. Y. Zhu, Theories, Methods and Numerical Technology of Sheet Metal Cold and Hot Forming: Analysis, Simulation and Engineering Applications, Chapter 1, (2012).

DOI: 10.1007/978-1-4471-4099-3_1

Google Scholar

[5] Z. Yang, Q. Peng and K. Yang, Lightweight Design of B-Pillar with TRB Concept Considering Crashworthiness, Third International Conference on Digital Manufacturing and Automation, (2012).

DOI: 10.1109/icdma.2012.121

Google Scholar

[6] Philipps, M., Patberg, L., Dittmann, R., Henrik, A., Structural Analysis and Testing of Composites in Automotive Crashworthiness Application, SAE Special Publications, Safety and Material Test Methodologies, v 1320, pp.97-101, (1998).

DOI: 10.4271/981140

Google Scholar

[7] S. Klimek, Simulation of Spotwelds and Weld seam of Prehardened Steel (PHS) Assemblies, LS Dyna Anwenderforum , Bamberg (2008).

Google Scholar

[8] E.A. Al-Bahkali, Load Displacement Curves of Spot Welded, Bonded and Welded-bonded Joints of Dissimilar Metals and Thickness, The Journal of Engineering Research Vol. 8 No. 2 (2011) 32-39.

DOI: 10.24200/tjer.vol8iss2pp32-39

Google Scholar

[9] M. Palmonella, M.I. Frishwell, J.E. Motterhead and A.W. Lees, Finite Element Model of Spot Welds in Structural Dynamics : Review and Updating, Computer and Structure 83 (2005), 648-661.

DOI: 10.1016/j.compstruc.2004.11.003

Google Scholar

[10] P. Salvini, E. Scardecchia, F. Vivio, Fatigue Life Prediction on Complex Spot Welded Joints, SEA 1997 Trans. J. Mater. Manufact., 106 (1997), p.967–975.

DOI: 10.4271/971744

Google Scholar

[11] P. Salvini, E. Scardecchia, G. Demofonti, A Procedure for Fatigue Life Prediction of Spot Welded Joints, Fat. Fract. Engng Mater. Struct., 20 (8) (1997), p.1117–1128.

DOI: 10.1111/j.1460-2695.1997.tb00317.x

Google Scholar

[12] Radioss Theory Manual, Large Displacement Finite Element Analysis, Chapter 6, (2012).

Google Scholar