2. Dimensioning perforated plates

2.1 Smooth plate fracture

We will study a laminated composite plate with holes in tension, the dimensions of which are given in figure 10 . We will assume that the material is the unidirectional carbon/epoxy T700/M21 mentioned above, with a thickness per ply of 0.25 mm, whose elastic characteristics are given in equation (5) and whose fracture characteristics are given in equation

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Dimensioning perforated plates

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Sizing assemblies

Bibliography

(1) - BOUVET (C.) - Dimensionnement des structures composites : applications à l'aéronautique. - ISBN : 978-1-78405-348-2, éd. ISTE (2018).
(2) - BERTHELOT (J.M.) - Matériaux composites : comportement mécanique et analyse des...

Standards and norms

Influence of fastener flexibility on the prediction of load transfer and fatigue life for multiplerow joints. Fatigue in mechanically fastened composite and metallic joints, ASTM International - ASTM STP-927 - 1986
Development of the fail-safe design features of the DC-10, Damage Tolerance in Aircraft Structures, ASTM STP 486, ASTM International - ASTM STP-486 - 1971

Regulations

Joint Airworthiness Requirements 25 (JAR25) – Part 1: requirements. Part 2 : acceptable means of compliance and interpretations (for composite structures : JAR25 § 25.603 and ACJ 25.603) (1978)