Degradation model based on Tsai-Hill factors to model the progressive failure of fiber metal laminates

Autor:	V.V. Subba Rao, Pavuluri M. V. Rao
Rok vydání:	2010
Předmět:	Materials science Mechanical Engineering Isotropy Glass fiber Fibre-reinforced plastic Stress (mechanics) Matrix (mathematics) Lamination theory Mechanics of Materials Materials Chemistry Ceramics and Composites Degradation (geology) Fiber Composite material
Zdroj:	Journal of Composite Materials. 45:1783-1792
ISSN:	1530-793X 0021-9983
Popis:	An analytical formulation is developed to estimate the strength of the fiber metal laminates (FML) consisting of cross-ply glass fiber reinforced plastic layers and aluminum sheets. Classical lamination theory is taken as basis for the formulation. A new degradation model based on Tsai-Hill terms is developed and used with analytical formulation to assess the progressive failure. Appropriate features are incorporated in the model to distinguish the matrix failure, the fiber matrix debonding, the fiber failure, and the failure of the isotropic layer. The formulation is used to predict the failure behavior of a FML under in-plane off-axis loading. Different strengths associated with the failure of the laminate like stress at first ply failure and yielding of isotropic layer are investigated. The results show that the new degradation model facilitated the detailed estimation of failure progression. These values of predicted strength are more accurate and closer to the actual experimental results than that of the values predicted by any other model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca5ce2a87d005d9350ff073222303992 https://doi.org/10.1177/0021998310387682 Zobrazit plný text záznamu