Abstract
In this work, compression tests have been carried out at different strain rate, from 10−3 to approximately 103 s−1, on agglomerated cork material. The quasi-static and low strain rate tests have been conducted by means of servo-pneumatic machine, whereas the high strain rate tests have been conducted by means of polymeric Hopkinson bar. The experimental results show a stress–strain relationship that is characterized by a typical S-shaped curve. As expected, the strength is observed to increase when the material is deformed at increasing strain rate. In addition, the properties during the relaxation phase have been considered as well, showing that the stress response is characterized by a rapid decrement while the deformation is almost completely recovered. The global mechanical behavior is found to be very well reproduced by a combination of constitutive models, which include compressible hyperelastic modeling and large-strain viscoelasticity. The matching between the experimental and analytical data is very precise in the monotonic loading phase. Moreover, considering a damage model of the Mullins type it is possible to reproduce reasonably well also the unloading phase.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Castro, O., Silva, J.M., Devezas, T., Silva, A., Gil, L.: Cork agglomerates as an ideal core material in lightweight structures. Mater. Des. 31, 425–432 (2010)
Sarasini, F., Tirillò, J., Lampani, L., Sasso, M., Mancini, E., Burgstaller, C., Calzolari, A.: Static and dynamic characterization of agglomerated cork and related sandwich structures. Compos. Struct. 212, 439–451 (2019)
Sanchez-Saez, S., García-Castillo, S.K., Barbero, E., Cirne, J.: Dynamic crushing behavior of agglomerated cork. Mater. Des. 65, 743–748 (2015)
Silva, S.P., Sabino, M.A., Fernandes, E.M., Correlo, V.M., Boesel, L.F., Reis, R.L.: Cork: properties, capabilities and applications. Int. Mater. Rev. 50, 345–365 (2005)
Pereira, H.: Cork: Biology, Production and Uses. Elsevier (2007)
Gibson, L.J., Ashby, M.F.: Cellular Solids: Structure and Properties, vol. 7. Cambridge University Press (1999)
Koohbor, B., Kidane, A., Wei-Yang Lu, L.: Characterizing the constitutive response and energy absorption of rigid polymeric foams subjected to intermediate-velocity impact. Polym. Test. 54, 48–58 (2016)
Fernandes, F.A.O., Jardin, R.T., Pereira, A.B., Alves de Sousa, R.J.: Comparing the mechanical performance of synthetic and natural cellular materials. Mater. Des. 82, 335–341 (2015)
Sergi, C., Sarasini, F., Tirillò, J., Barbero, E., Sanchez-Saez, S., Sasso, M., Mancini, E.: Temperature, strain rate and anisotropy effects on compressive response of natural and synthetic cellular core materials. Compos. Struct. 260, 113268 (2015). https://doi.org/10.1016/j.compstruct.2020.113268
Sasso, M., Antonelli, M., Mancini, E., Radoni, M., Amodio, D.: Experimental and numerical characterization of a polymeric Hopkinson bar by DTMA. Int. J. Impact Eng. 103, 50–63 (2017)
Martarelli, M., Mancini, E., Lonzi, B., Sasso, M.: Sensor calibration of polymeric Hopkinson bars for dynamic testing of soft materials. Meas. Sci. Technol. 29(2), 025601 (2018)
Farotti, E., Mancini, E., Bellezze, T., Sasso, M.: Investigation of the effects of mold temperature, test temperature and strain rate on mechanical behaviour of polypropylene. J. Dynam. Behav. Mater. 5, 344–360 (2019)
Fernandes, F.A.O., Pascoal, R.J.S., Alves de Sousa, R.J.: Modelling impact response of agglomerated cork. Mater. Des. 58, 499–507 (2014)
Mano, J.F.: The viscoelastic properties of cork. J. Mater. Sci. 37, 257–263 (2002)
Simo, J.C.: On a fully three-dimensional finite-strain viscoelastic damage model: formulation and computational aspects. Comput. Methods Appl. Mech. Eng. 60, 153–173 (1987)
Sasso, M., Amodio, D.: Development of a biaxial stretching machine for rubbers by optical methods. In: Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics, vol. 3, pp. 1161–1171 (2006)
Ptak, M., Kaczynski, P., Fernandes, F.A.O., Alves de Sousa, R.J.: Assessing impact velocity and temperature effects on crashworthiness properties of cork material. Int. J. Impact Eng. 106, 238–248 (2017)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Society for Experimental Mechanics, Inc.
About this paper
Cite this paper
Sasso, M. et al. (2022). Constitutive Modeling of the Dynamic Behavior of Cork Material. In: Amirkhizi, A., Notbohm, J., Karanjgaokar, N., DelRio, F.W. (eds) Challenges in Mechanics of Time Dependent Materials, Mechanics of Biological Systems and Materials & Micro-and Nanomechanics, Volume 2. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-86737-9_8
Download citation
DOI: https://doi.org/10.1007/978-3-030-86737-9_8
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-86736-2
Online ISBN: 978-3-030-86737-9
eBook Packages: EngineeringEngineering (R0)