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An enhanced beam-theory model of the mixed-mode bending (MMB) test—Part II: Applications and results

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An Erratum to this article was published on 17 January 2013

Abstract

The paper presents an enhanced beam-theory (EBT) model of the mixed-mode bending (MMB) test, whereby the specimen is considered as an assemblage of two sublaminates partly connected by an elastic–brittle interface. Analytical expressions for the compliance, energy release rate, and mode mixity are deduced. A compliance calibration strategy enabling numerical or experimental evaluation of the interface elastic constants is also presented. Furthermore, analytical expressions for the crack length correction parameters—analogous to those given by the corrected beam-theory (CBT) model for unidirectional laminated specimens—are furnished for multidirectional laminated specimens, as well. Lastly, an example application to experimental data reduction is presented.

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Acknowledgements

The financial support of the Italian Ministry of Education, University and Research (MIUR) under programme PRIN 2008 “Light structures based on multiscale material in civil engineering: stiffness and strength, assembly and industrial repeatability” (Prot. N. 20089RJKYN_002) is gratefully acknowledged.

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  1. Dipartimento di Ingegneria Civile e Industriale, Università di Pisa, Largo Lucio Lazzarino, 56126, Pisa, Italy

    Stefano Bennati, Paolo Fisicaro & Paolo S. Valvo

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  1. Stefano Bennati
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  2. Paolo Fisicaro
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  3. Paolo S. Valvo
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Correspondence to Paolo S. Valvo.

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Bennati, S., Fisicaro, P. & Valvo, P.S. An enhanced beam-theory model of the mixed-mode bending (MMB) test—Part II: Applications and results. Meccanica 48, 465–484 (2013). https://doi.org/10.1007/s11012-012-9682-7

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