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Experimental Investigation of Axial Cutting of AA6061 Extrusions under a Tension Deformation Mode
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
A plethora of applications in the transportation industry for both vehicular and roadside safety hardware, especially seatbelts, harnesses and restraints, rely on tensile loading to dissipate energy and minimize injury. There are disadvantages to the current state-of-the-art for these tensile energy absorbers, including erratic force-displacement responses and low tensile force efficiencies (TFE). Axial cutting was extensively demonstrated by researchers at the University of Windsor to maintain a stable reaction force, although exclusively under compressive loading. A novel apparatus was investigated in this study which utilized axial cutting under a tensile loading condition to absorb energy. A parametric scope was chosen to include circular AA6061 extrusions in both T4 and T6 temper conditions with an outer diameter of 63.5 mm and wall thickness of 3.18 mm. The experiments were performed quasi-statically utilizing a custom, hydraulically powered long stroke tension/compression testing machine with a maximum capacity of 300kN. Strain-gauge based load cells and non-contact displacement transducers were implemented to measure the cutting force and displacement response of the setup. The results demonstrated highly stable force responses, with cutting force efficiencies typically in the vicinity of 90%. The experimental force-displacement responses exhibited a high degree of repeatability and correlation to the analytical model. Critical performance metrics, including the mean load and total energy absorption, were predicted to within 5 %. Additionally, the complete force-displacement response was predicted utilizing an analytical modeling approach with an average validation metric of approximately 0.92.
CitationGudisey, A., Altenhof, W., and Magliaro, J., "Experimental Investigation of Axial Cutting of AA6061 Extrusions under a Tension Deformation Mode," SAE Technical Paper 2020-01-0206, 2020.
Data Sets - Support Documents
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- Brittanica, E. , “Impact Injury,” 2019, [Online], available at: https://www.britannica.com/science/impact-injury.
- “Road Safety Tips,” [Online], available at: https://www.asirt.org/safe-travel/road-safety-facts/, accessed Oct. 2019.
- Verma, S.K., Willets, J., Corns, H., Marucci-Wellman, H.-R., and Lombardi, D. , “Falls and Fall-Related Injuries Amoung Community-Dwelling Adults,” PLoS One, 2016, doi:10.1371/journal.pone.0150939.
- World Health Organization , “Road Traffic Injuries,” Nov. 29, 2018, [Online], available at: https://www.who.int/news-room/fact-sheets/detail/road-traffic-injuries, accessed Oct. 2019.
- International Road Federation , “Cost Effective Roadside Safety Countermeasures,” Oct. 16, 2016, [Online], available at: https://www.irf.global/event/webinar-low-cost-effective-roadside-safety-countermeasures/, accessed Oct. 2019.
- Jordan, P. , “A Brief Introduction to Safety Barriers,” Road Safety International Pty Ltd, Bali, 2014.
- Fernandez, M.A., Garcia-Escudero, L.A., and Molinero, A. , “Analysis of Real Crashes Against Metal Roadside Barriers,” PLoS One, 2019, doi:10.1371/journal.pone.0211674.
- Karim, H., Magnusson, R., and Wiklund, M. , “Assessment of Injury Rates Associated with Road Narrier Collision,” Social and Behaviourial Sciences 48:52-63, 2012.
- Goh, Y.M. and Love, P. , “Adequacy of Personal Fall Arrest Energy Absorbers in Relation to Heavy Workers,” Safety Science 48:747-754, 2010.
- Robinson, L. , Factors Affecting the Strength of Safety Harness and Lanyard Materials - Combination of Effects (Buxton, UK: Health and Safety Laboratory, 2007).
- Waimer, M., Schatrow, P., Feser, T., Kraft, H., and Kohlgruber, D. , Development of a Tension Energy Absorber - Progressive Bearing Failure Mechanisms of Composite Bolted Joints (Cologne, Germany: German Aerospace Center (DLR), 2016).
- Heimbs, S. and Bergmann, T. , “Bearing Mode Absorber - On the Absorption Capability of Pulling a Bolt through a Composite or Sandwich Plate,” International Symposium on Dynamic Response and Failure of Composite Materials 88:146-156, 2014.
- Cheng, Q. and Altenhof, W. , “Load/Displacement and Energy Absorbption Performances of AA6061-T6 Tubes Under a Cutting Deformation Mode,” International Journal of Crashworthiness 10:621-633, 2005.
- Jones, N. , Dynamic Progressive Buckling in Structural Impact (Cambridge, UK: Cambridge University Press, 2003), 385-388.
- Jin, S.Y. and Altenhof, W. , “Control of Load/Displacement Responses of AA6061 and T4 Circular Extrusions Under Axial Compressive Loads,” Internation Journal of Impact Engineering 38:1-12, 2011.
- Jin, S.Y., Altenhof, W., and Kapoor, T. , “An Experimental Investigation into the Cutting Deformation Mode of AA6061-T6 Round Extrusions,” Thin Walled Structures 44:773-786, 2006.
- Jin, S.Y., Altenhof, W., and Li, Z. , “A Parametric Study on Extrusion Geometry and Blade Quantity During Axial Cutting Deformation of Circular AA6061-T6 Extrusions under Impact and Quasi-Static Loading,” Internation Journal of Impact Engineering 49:165-178, 2012.
- Magliaro, J., Altenhof, W., and Gudisey, A. , “Analytical and Experimental Investigations of the Enhanced Mechanical Response of Cutting Deformation Compared to Progressive Folding in AA6061 Energy Dissipation Devices,” International Journal of Mechanical Sciences 158:808-827, 2019.
- Zheng, Z.M. and Wierzbicki, T. , “A Theoretical Study of Steady-State Wedge Cutting Through Metal Plates,” International Journal of Fracture 78:45-66, 1996.
- Jin, S.Y. and Altenhof, W. , “An Analytical Model on the Steady-State Deformation of Circular Tubes under an Axial Cutting Deformation Mode,” International Journal of Solids and Structures 48:269-279, 2011.
- Magliaro, J. and Altenhof, W. , “Analytical Predictions of the Complete Mechanical Response of AA6061 Energy Absorbers Subjected to Axial Cutting,” Thin-Walled Structures 139:151-168, 2019.
- Jin, S. , Novel Cutting Deformation Modes on Axially Loaded Circular AA6061 (Windsor, Ontario: University of Windsor, 2012).
- Oberkampf, W. and Trucano, T. , “Verification and Validation in Computational Fluid Dynamics,” Progress in Aerospace Sciences 38(3):209-272, 2002.
- Jin, S., Majumder, A., and Green, D. , “Axial Cutting of AA6061-T6 Circular Extrusions Under Impact Using Single and Dual-Cutter Configurations,” International Journal of Impact Engineering 37:735-753, 2010.