Transition Saddle-Cylinder Shape of Thin Unsymmetric [0/90] Square Plates under Hygrothermal Loads: Fringe Projection Method and Variational Approach

Abstract:

The deformation of free laminated plates subjected to transient hygrothermal loading is simulated by using a semi-analytical non linear model (variational method). A full-field experimental technique, the fringe projection method, has been developed to measure out-of-plane displacements throughout the deformation process. The experimental approach based on a full-field optical method is shown to be suited to capturing the complex behaviour of plates submitted to large hygrothermal loads, where geometrical nonlinearities should be taken into account.

• Periodical: Applied Mechanics and Materials (Volumes 3-4)
• Pages: 217-222
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.3-4.217
• Online since: August 2006
• Authors: M. Gigliotti, Frederic Jacquemin, J. Molimard, A. Vautrin
• Keywords: Fringe Projection Method, Hygrothermal Loads, Nonlinear Deformation, Unsymmetric 0/90 Plates

References

[1] Hyer M.W. Calculations of the Room-Temperature Shapes of Unsymmetric Laminates, Journal of Composite Materials, Vol. 15 (1981), p.296.

DOI: 10.1177/002199838101500401

[2] Gigliotti M., Wisnom M.R., Potter K.D. Development of Curvature during the Cure of AS4/8552 [0/90] Unsymmetric Composite Plates, Composites Science and Technology, Vol. 63 (2003), p.187.

DOI: 10.1016/s0266-3538(02)00195-1

[3] Kim K.S. Hahn H.T. Residual Stress Development during Processing of Graphite/Epoxy Composites, Composites Science and Technology, Vol. 36 (1989), p.121.

DOI: 10.1016/0266-3538(89)90083-3

[4] White S.R., Hahn H.T. Process Modelling of Composite Materials: Residual Stress Development during Cure. Part II: Experimental Validation, Journal of Composite Materials, Vol. 26 (1992), p.2423.

DOI: 10.1177/002199839202601605

[5] Sarrazin H., Kim B., Ahn S.H., Springer G.S. Effects of Processing Temperature and Lay-up on Springback, Journal of Composite Materials, Vol. 10 (1995), p.1278.

DOI: 10.1177/002199839502901001

[6] Tarsha-Kurdi K.E., Olivier P. Thermoviscoelastic Analysis of Residual Curing Stresses and the Influence of Autoclave Pressure on These stresses in Carbon/Epoxy Laminates, Composites Science and Technology, Vol. 62 (2002), p.559.

DOI: 10.1016/s0266-3538(01)00148-8

[7] Wu, Y. J., Takayota, T., Chung, K., Seferis, J. C. et Ahn, K., Development of the transient simulated laminate (TSL) methodology for moisture ingression studies using unsymmetric laminates, Journal of Composite Materials, Vol. 34 (2000).

DOI: 10.1177/002199800772661949

[8] Carslaw H.S., Jaeger J.C. Conduction of Heat in Solids, 2 nd Edition Oxford University Press (1974).

[9] Gigliotti M., Wisnom M.R., Potter K.D. "Loss of Bifurcation and Multiple Shapes of Thin.

/90] Unsymmetric Plates Subject to Thermal Stress" Composites Science and Technology, Vol. 64, p.109, (2004).

[10] Surrel, Y., Phase stepping: a new self-calibrating algorithm, Applied Optics, Vol. 32 (1993), pag. 3598.

DOI: 10.1364/ao.32.003598