Abstract
At the earliest timescale after projectile impact on woven composites, stress waves propagate out from the area of impact both radially and through the thickness. At a later timescale, momentum transfer leads to the formation of a deformation cone. Studies of wave propagation in composites typically consider the radial stress wave propagation and the formation of the transverse deformation cone but neglect through-thickness stress waves. This chapter investigates the effects of through-thickness stress wave propagation on damage and delamination under a projectile in a woven composite. This investigation uses a mesoscale model of plain weave composite, validated using 1D stress wave theory. This model uses a cohesive traction-separation law to simulate delamination cracking, inelastic progressive damage composite tows, and rate-dependent matrix. The 1D stress wave theory is generalized for any number of layers. A finite element modeling approach is validated using the generalized 1D theory.
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Acknowledgments
The research was sponsored by the US Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-12-2-0022. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the US Army Research Laboratory or the US Government.
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Meyer, C.S., Haque, B.Z., Gillespie, J.W. (2023). Through-Thickness Stress Wave Propagation, Delamination, and Damage in a Woven Composite. In: Mates, S., Eliasson, V., Allison, P. (eds) Dynamic Behavior of Materials, Volume 1. SEM 2022. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-031-17453-7_20
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DOI: https://doi.org/10.1007/978-3-031-17453-7_20
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