Optimizing energy absorption in multi-layered materials through controlled delamination |
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Authors: | M H Lear B V Sankar |
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Affiliation: | (1) Test Engineer, 46th Test Wing, Eglin AFB, FL, USA;(2) Mechanics & Engineering Science, University of Florida, USA |
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Abstract: | The intent of this paper is to investigate the mechanics of delamination growth in an isotropic, ideally-brittle layered material under an impact load and to present guidelines for the design of more energy absorbent structures. Using a finite element model, both two- and three-layered configurations are considered. Prompted by the results from this model, closed-form solutions for the interlaminar shear strength and the interfacial fracture toughness corresponding to maximum energy absorption are derived for the two-layered laminate. These solutions were used to develop guidelines for the optimal design of two- and three-layered laminates. |
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