The U-Bending Forming of Aluminum Foam Sandwich Panels

Abstract:

Article Preview

The U-bending process of aluminum foam sandwich (AFS) is investigated, and a punch bending test is carried out in this paper. We discussed the bending deformation mode and generated the load & stroke curve of AFS panel by experiments. Macroscopic and microscopic punch forming mechanisms of AFS panels are analyzed by testing experiments and plasticity theory. We study the major deformation defects of AFS forming such as the delamination between the panel and the foam core, the excessive thinning of panels in the round corner, and shear stress cracks of the foam core. A conclusion is drawn on the panels variable blank holder force (VBHF) and the striking block control on the round corner, which would promote the forming technology of AFS.

Info:

Periodical:

Edited by:

Seung-Bok Choi, Yun-Hae Kim and Prasad Yarlagadda

Pages:

1432-1439

Citation:

S. G. Chen et al., "The U-Bending Forming of Aluminum Foam Sandwich Panels", Applied Mechanics and Materials, Vols. 477-478, pp. 1432-1439, 2014

Online since:

December 2013

Export:

Price:

$41.00

* - Corresponding Author

[1] Ashby M. F, Evans A, Fleck N.A., 2000. Metal Foams: A Design Guide, first ed. Butterworh-Heinemann, Boston, pp.65-75.

[2] Chen C,Harte A.M. ,Fleck N.A., 2001. The plastic collapse of sandwich beams with a metallic foam core, international Journal of Mechanical Sciences. 43, 1483-1506.

DOI: https://doi.org/10.1016/s0020-7403(00)00069-2

[3] Santosa Sigit, Banhart John, Wierzbicki Tomasz, 1999. Bending crush behavior of foam-filled section. In: Banhart, John (Eds. ), International Conference on Metal Foams and Porous Metal Structures, Verlag MIT. , Bremen, pp.337-345.

[4] Hanssen AG., Hopperstand OS., Langseth M., 2000. Bending of square aluminum extrusions with aluminum foam filler. Acta Mechanica. 142, 13-31.

DOI: https://doi.org/10.1007/bf01190010

[5] Santosa S, Banhart J, Wierzbicki T, 2001. Experimental and numerical analysis of bending of foam-filled sections. Acta Mechanica. 148, 199-213.

DOI: https://doi.org/10.1007/bf01183678

[6] XunKun, KouDongPeng, WangErHeng, YuJiLin, 2005. Static collapsed and bending behavior of thin-walled square tubes filled with aluminum foam. Solid Mechanics Journal. 26, 261-266. (In China).