6. Validation Test Case

ACCS has been validated against data published in the literature [1]. This test case looks at the spring-in angle of 270° of 50 mm diameter tubes. They were made of Hexcel AS4/8552 unidirectional plies in cross-ply lay-up with thicknesses ranging between 1 mm and 4 mm. The figure below presents the comparison between the results obtained with ACCS and previously published.

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Fig. 6.1 Effect of thickness on spring-in angle for curved cross-ply laminates.

[1] Ersoy, N., Garstka, T., Potter, K., Wisnom, M.R., Porter, D., Clegg, M., Stringer, G., (2010). Development of the properties of a carbon fibre reinforced thermosetting composite through cure. Composites (Part A). 41, pp.401-409