Modelling the Uniaxial Impact Response of a Nonlinear Sandwich Structure with Interlaminar Buckling


Article Preview

This paper describes the development of a software simulation tool of discrete elements which has been developed for the purpose of investigating the dynamic response of multilayer sandwich structures that incorporate highly nonlinear crumple (buckling) elements. These structures are to be optimised as cushions in order to minimise the transmission of shocks when exposed to transient excitation, such as in a free fall. Presented results are for multilayer corrugated paperboard. A single layer was modelled as a nonlinear 2-DOF system with an additional elastoplastic element to reflect contact conditions. Numerical models of the platen and the exciter with either acceleration or displacement control were developed and applied to perform numerical compression tests of the sandwich layer at various strain rates to validate the model of a single layer. Sandwich structures were then numerically assembled and subjected to simulated impacts. The model predicted inter- and intralaminar forces, displacements, velocities and accelerations. The shock attenuation characteristics were obtained and presented as the time-acceleration-static stress maps. A postprocessor was developed to produce animations to reveal complex dynamic interactions within modelled sandwich structures.



Edited by:

J. Quinta da Fonseca




M. A. Sek "Modelling the Uniaxial Impact Response of a Nonlinear Sandwich Structure with Interlaminar Buckling ", Applied Mechanics and Materials, Vols. 7-8, pp. 271-276, 2007

Online since:

August 2007





[1] Gordon, G. Assessment of the shock-reducing properties of corrugated fibreboard, International Conference on Packaging Technology, Pira/IAPRI, p.36: 1-15 (1972).

[2] Kirkpatrick, J. and Sek, M.A. Replacement of polymeric cushioning with corrugated fibreboard - case study, 10th IAPRI World Conference on Packaging, pp.267-276, Melbourne (1997).

[3] Sek, M.A. et al Performance characteristics of a paper based material Corrupad® for cushioning applications, 11th IAPRI World Conference on Packaging, pp.403-415, Singapore (1999).

[4] Sek, M.A. and Kirkpatrick, J. Corrugated Cushion Design Manual, Victoria University and Amcor, ISBN 1-86272-598-5 (2001).

[5] Sek M.A. and Kirkpatrick J. Prediction of cushioning properties of corrugated fibreboard from static and quasi-dynamic compression data, Int. Journal of Packaging Technology and Science, 10 (1997), pp.87-94.

DOI: 10.1002/(sici)1099-1522(199703/04)10:2<87::aid-pts389>;2-l

[6] Sek M.A., Minett M., Rouillard V. and Bruscella B. A new method for the determination of cushion curves, Int. Journal of Packaging Technology and Science, 13 (2000), pp.249-255.

DOI: 10.1002/pts.517

[7] Sek M.A. and Rouillard V. Behaviour of multilayered corrugated paperboard cushioning systems under impact loads, Applied Mechanics and Materials, 3-4 (2005), pp.383-388.

DOI: 10.4028/

[8] Sek M.A., Rouillard V., Crawford S. and Tarash H. Enhancement of cushioning performance with paperboard crumple inserts. Int. Journal of Packaging Technology and Science, 18 (2005), pp.273-278.

DOI: 10.1002/pts.698

[9] Sek M.A. and Rouillard V. High-speed videographic study of engineered composite paperboard cushioning systems, Proc. 15th IAPRI World Conference, Tokyo, Japan (2006), pp.258-262.

[10] Matlab® Reference Manual, Mathworks. Fig. 6 Simulated and experimental shock pulse for a 13+4 layer MLCPB (75% precompression).

Fetching data from Crossref.
This may take some time to load.