Browsing by Author "Nahas, Mahmoud Nadim"
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Item Open Access Failure of Laminated Fibre-reinforced Composite Structures Subject to Combined Loadings(Cranfield University, 1980) Nahas, Mahmoud Nadim; Tetlow, R.; Trotman, C. K.; Howe, D.A new modified maximum strain failure criterion is proposed to predict the failure of the laminae of laminated fibre-reinforced composite structures when the laminate is subjected to combined loadings. The new criterion takes into account the layer non-linear behaviour which is an important factor in the failure prediction operation. The analysis of laminated structures containing laminae with non-linear stress-strain response is also studied and a new method is proposed for this analysis. The modified failure criterion introduces two levels of failure. The lower level is associated with the “yield” of the lamina, or the beginning of the lamina degradation, above which the lamina will exhibit irreversible damage. The higher failure level however, is associated with the “ultimate” failure of the lamina, above which the lamina cannot sustain any load. Cont/d.