Abstract
The use of lighter structural and energy absorbing materials to increase fuel efficiency in transportation systems has provided a motivation to investigate the use of new joining techniques based on the use of high strength and high tenacity adhesives. Current joining techniques, such as spot-welding, limit the possible weight reduction that can be achieved if lighter sections, dissimilar materials and/or novel geometries were to be used.
To address this need, a parallel program on adhesive material characterization, numerical modeling and experimental testing has been undertaken using representative thin-walled steel crush tubes. Adhesive characterization was undertaken at quasi-static and high strain rates to determine the material properties, and this data was used to define a constitutive model for the adhesive. The adhesive model was then implemented in numerical simulations of representative crush tubes for comparison to experimental testing. Although the model predictions in terms of peak and average crush loads as well as final deformations and fracture pattern in the adhesive were in good agreement with the experimental tests conducted at dynamic loading rates, further research is required to develop constitutive models that can better describe local aspects of the fracture process in adhesive materials.
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Acknowledgement
The authors gratefully acknowledge the use of SHARCNET computing facilities, material testing undertaken by Jeff Wemp and Christopher Thom, and support from the Ontario Centre’s of Excellence (OCE) and 3M Company.
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© 2014 The Society for Experimental Mechanics, Inc.
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Trimiño, L.F., Cronin, D.S. (2014). Adhesively Joined Crush Tube Structures Subjected to Impact Loading. In: Song, B., Casem, D., Kimberley, J. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00771-7_27
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DOI: https://doi.org/10.1007/978-3-319-00771-7_27
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