Numerical and Experimental Investigation of Bending Behavior of Pre-Stressed Aluminum Tube

Year 2019, Volume: 23 Issue: 5, 749 - 754, 01.10.2019

Seçil Ekşi , Kenan Genel

https://doi.org/10.16984/saufenbilder.528549

Abstract

The effect of the pre-stress and internal Pa6 (cast-polyamide) material
on the bending behavior of the aluminum tube is investigated experimentally. Finite
element studies have been carried out to better understand the effect of
pre-stress on the cross-section of tube and to shed light on the experimental
studies. From the simulation studies, it was concluded that the effect of the
pre-stress on the load carrying capacity of the tube is limited. After finite
element studies, experimental studies were performed. In experimental studies,
the lower cross-section of the tube was subjected to 175 MPa stress
corresponding to 93% of the yield strength of the material. The tensile stress
in the tube during the loading is reduced by applying pressure to the lower
cross section of the tube beam. In addition, a change in the load carrying
capacity of the tube was investigated using a Pa6 ring to delay local buckling.
As a result of the experiments, it was found that the pre-stress significantly
improved the bending behavior of the tube in the elastic region, while reducing
buckling displacement.  Application of both
pre-stress and internally reinforcement enhanced bending performance of the
tube in both elastic and plastic regions. Load carrying capacity of pre-stressed
and internally reinforced tube was increased 1.67 times
according to the base tube.  

Keywords

pre-stress1, tube2, bending3, finite element analysis4

References

• [1] P. Zhu, H. Fan and Y. Zhou, "Flexural behavior of aluminum I-beams strengthened by pre-stressed CFRP tendons", Construction and Building Materials, vol.122, pp. 607– 618, 2016.
• [2] E. Bernat-Maso, L. Gil, L. Mercedes and C. Escrig, "Mechanical properties of pre-stressed fabric-reinforced cementitious matrix composite (PFRCM)", International Journal of Impact Engineering, vol. 35, pp. 1267–1279, 2008.
• [3] S. Liu, D. Zhu, G. Li, Y. Yao, Y. Ou, C. Shi and Y. Du, "Flexural response of basalt textile reinforced concrete with pre-tension and short fibers under low-velocity impact loads", Construction and Building Materials, vol.169, pp.859–876,2018.
• [4] B. Anshari, Z.W. Guan, A. Kitamori, K. Jung and K. Komatsu, "Structural behaviour of glued laminated timber beams pre-stressed by compressed wood", Construction and Building Materials, vol. 29, pp. 24–32, 2012.
• [5] M. Zeinoddini, J.E. Harding and G.A.R. Parke, "Axially pre-loaded steel tubes subjected to lateral impacts (a numerical simulation) ", International Journal of Impact Engineering, vol. 35, pp. 1267–1279, 2008.
• [6] S. E. Firouzsalari and H. Showkati, "Behavior of pre-compressed tubes subjected to local loads", Ocean Engineering, vol. 65, pp. 19–31, 2013.
• [7] X-D. Zhia, R. Zhanga, F. Fana and C. Huanga, "Experimental study on axially preloaded circular steel tubes subjected to low-velocity transverse impact", Thin-Walled Structures, vol.130, pp.161–175, 2018.
• [8] H-D. Guan, Z-B. Cai, Y-P. Ren, J-Y. Jing, W-J. Wang and M-H. Zhu, "Impact-fretting wear behavior of Inconel 690 alloy tubes effected by pre-compressive stress", Journal of Alloys and Compounds, vol.724, pp. 910–920, 2017.