Design tool to predict the open-hole failure strength of composite laminates subjected to in-plane loads. (15th April 2020)

• Record Type: Journal Article
• Authors: Moure, M.M.; Herrero-Cuenca, J.; García-Castillo, S.K.; Barbero, Enrique
• Is Part Of: Composite structures. Volume 238(2020)
• Publication Date: 2020-04-15
• Subjects: Open hole -- Notched compression -- Notched tension -- Non-dimensional model; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2020.111970
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: A design tool based on Whitney-Nuismer model is proposed to predict the failure strength of open-hole composite plates subjected to in-plane loads, both tensile and compressive. One of the limitations of this model is the use of characteristic distances, which have to be estimated, and which are mostly considered constant material properties. In this work, it is demonstrated that these characteristic distances are a function of the plate geometry and are not a material property. Different analytical expressions are proposed to estimate the characteristic distances by using the results of only three experimental tests. This approach enables an accurate and fast estimation of the failure strength when the parameters of the plate are modified without using numerical simulations that require a longer time to be carried out.