Modeling of Crashworthiness in Energy Absorbent Shells with Discontinuities

Authors

1 Aerospace engineering department, Mechanical department, Tarbiat modares university, Tehran, Iran

2 Associate Professor of aerospace engineering department, Mechanical department, Tarbiat modares university, Tehran, Iran

10.22044/jsfm.2024.12993.3729

Abstract

The importance of research in crashworthiness and the post-accident behavior and efforts to improve the behavior of the structure and reduce the accelerations to the occupants with the help of energy absorbers is determined by observing the increasing statistics of vehicle accidents, including cars, trains, and airplanes. In this research, the energy-absorbing behavior of a thin wall with an aluminum rectangular section will be investigated by numerical solution in finite element method and in Abaqus software, and to improve its energy absorption parameters, discontinuities were created on the geometry, which regularized the folding pattern. The primary research approach is to improve the energy absorption behavior without fundamentally changing the geometry. Discontinuities with different geometrical shapes, sizes, and numbers are placed in different places in the model to obtain the best energy absorption behavior. After evaluating and choosing the circular discontinuity among the other geometric shapes, for their proper placement, an initial guess of the location of the discontinuities was considered with the help of similar research. Then, the eigenvalues of the geometry extracted from the buckling solver have been used to place and increase the number of discontinuities.
Finally, by examining 43 models with different numbers and placement of discontinuities, a model with a 13% improvement in the CFE criterion was proposed.

Keywords

Main Subjects

References

[1] I. Simula Technologies, small airplane Crashworthiness design guide, T. R. Hurley and J. M. Vandenburg, Eds.(2002) The NASA Langley Research Center General Aviation Program Office.
[2] J. Alexander (1960) "An approximate analysis of the collapse of thin cylindrical shells under axial loading," The Quarterly J. Mech. Appl. Math., vol. 13, no. 1, pp. 10-15.
[3] W. Abramowicz and N. Jones (1984) "Dynamic axial crushing of circular tubes," Int. J. Imp. Eng., vol. 2, no. 2, pp. 179-208.
[4] S. C. Yuen and G. Nurick (2008) "The energy-absorbing characteristics of tubular structures with geometric and material modifications: an overview.," Applied Mechanics Reviews, vol. 61, no. 2.
[5] A. Ghamarian and M. T. Abadi (2011) "Axial crushing analysis of end-capped circular tubes," Thin-Walled Structures, vol. 49, no. 6, pp. 743-752.
[6] S. Azarakhsh and A. Ghamarian (2017) "Collapse behavior of thin-walled conical tube clamped at both ends subjected to axial and oblique loads," Thin-Walled Structures, vol. 112, pp. 1-11.
[7] B. Simhachalam, K. Srinivas and C. Lakshmana Rao, "Energy absorption characteristics of aluminum alloy AA7XXX and AA6061 tubes
[16] Q. Estrada, D. Szwedowicz, M. Baltazar, C. Cortes, T. Majewski and C. A. Estrada (2015) "The performance of energy absorption in structural profiles with different discontinuities," The Int J. Adv. Manufac. Tech., vol. 84, no. 5-8, pp. 1081-1094, 27.
[17] Q. Estrada, D. Szwedowicz, A. Rodriguez-Mendez, M. Elías-Espinosa, J. Silva-Aceves, J. Bedolla-Hernández and O. A. Gómez-Vargas (2019) "Effect of radial clearance and holes as crush initiators on the crashworthiness performance of bi-tubular profiles," Thin-Walled Structures, vol. 140, pp. 43-59., 1.
[18] Q. Estrada, D. Szwedowicz, A. Rodriguez-Mendez, O. A. Gómez-Vargas, M. Elias-Espinosa and J. Silva-Aceves (2018) "Energy absorption performance of concentric and multi-cell profiles involving damage evolution criteria," Thin-Walled Structures, vol. 124, pp. 218-234.
[19] Q. Estrada, D. Szwedowicz, J. Silva-Aceves, T. Majewski, J. Vergara-Vazquez and A. Rodriguez-Mendez (2017) "Crashworthiness behavior of aluminum profiles with holes considering damage criteria and damage evolution," Int. J. Mech. Sci., vol. 131, pp. 776-791.
[20] M. Bay and A. Rahi (2020) "Investigation of crashworthiness behavior of thin-walled cylindrical tubes with cutting edges under axial and oblique quasi-static loading," J. Mech. Eng., vol. 50, no. 1, pp. 37-46.
[21] Özkan ÖZBEK, Ömer Yavuz BOZKURT, Ahmet ERKLİĞ (2019) "Crashworthiness of basalt fiber reinforced composite pipes subjected to quasi-static lateral compression".UEMK.
[22] H. Hooputra, H. Gese, H. Dell and H. Werner (2004) "A comprehensive failure model for crashworthiness simulation of aluminum extrusions," Int. J. Crashworthiness, vol. 9, no. 5, pp. 449-464.
      subjected to static and dynamic axial load," International J. Crashworthiness, vol. 19, no. 2, pp. 139-152, 05 Feb 2014.
[8] D. Sun, M. Krawiec and H. Hooputra (2017) "Characterization and Modelling of the Damage Behavior of Extruded Aluminum Profiles for Crash Simulations," Materials Science Forum, vol. 877, pp. 674-679.
[9] Q. Cheng, W. Altenhof and L. Li (2006) "Experimental investigations on the crush behavior of AA6061-T6 aluminum square tubes with different types of through-hole discontinuities," Thin-Walled Structures, vol. 44, pp. 441-454.
 
[10] M. Ferdynus (2013) "An energy absorber in the form of a thin-walled column with square cross-section and dimples," Maintenance and Reliability, vol. 15, no. 3, p. 253–258.
[11] Kiasat, M. S., and A. Najibi (2008) "Numerical Analysis of Crashworthiness of Circular and Square Tubes under Axial Crashing." ISME2008: 14-16.
[12] J. Marzbanrad (2011) " Modeling and Simulation of an Auto-Body Structure Considering Crashworthiness Assessment Approach Submitted to a Barrier for Energy Absorption Enhancement," Conference on Mechanical Engineering, no. 1.
[13] Shariati, Mahmoud, and H. Hatami (2012) "Experimental study of SS304L cylindrical shell with/without cutout under cyclic axial loading." Theoretical and Applied Fracture Mechanics 58.1: 35-43.
[14] D. aghjani, "The experimental and finite element analysis of energy absorbers with Grooved circular cross section by foam in modern bumper of vehicles," Conference on Mechanical Engineering, Material and Metallurgy, no. 5.
[15] Jahromi, A. Ghodsbin, and H. Hatami (2017) "Energy absorption performance on multilayer expanded metal tubes under axial impact." Thin-Walled Structures 116 2017: 1-11.
Journal of Solid and Fluid Mechanics
Volume 13, Issue 6
January and February 2024
Pages 1-15

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