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Heuristic design of composite laminates for strength, stiffness and multiple load cases

Published online by Cambridge University Press:  04 July 2016

S.K. Morton
Affiliation:
Departments of Engineering Mathematics
J.P.H. Webbert
Affiliation:
Aerospace Engineeringt University of Bristol, UK.

Abstract

The problem of designing a composite laminated plate subject to multiple loading cases is addressed using the methodology of heuristic redesign. Lower bounds on extensional stiffnesses together with a maximum strain first ply failure criterion constitute the design constraints. The general theory of heuristic redesign and its application to this particular problem are described. Results for different combinations of loading cases and redesign strategies are presented.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1997 

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References

1. Vanderplaats, G.N. and Weisshaar, T.A. Optimum design of composite structures, Int J Numerical Methods Engineering, 1989, 27, pp 437448.Google Scholar
2. Webber, J.P.H. and Morton, S.K. An expert system for laminated plate design using composite materials, Computers & Struct, 1990, 37, pp 10511067.Google Scholar
3. Morton, S.K. and Webber, J.P.H. Heuristic methods in the design of composite laminated plates, Comp Struct, 1991, 19, pp. 207265.Google Scholar
4. Morton, S.K., Webber, J.P.H. and Wu, C.M.L. A Computer Expert System for Composite Plate and Strut Design, in Hernandez, S. and Brebbia, C.A. (Eds.), Optimization of structural systems and industrial applications, Proc Second International Conference on Computer Aided Optimum Design of Structures, 1991, pp 629642.Google Scholar
5. Morton, S.K. and Webber, J.P.H. Optimisation of composite structural components, Proc. IUTAM Symposium on Optimal Design with Advanced Materials, Lyngby, Denmark, August 1992.Google Scholar
6. Morton, S.K. and Webber, J.P.H. Heuristic optimisation of a laminat ed composite plate and its comparison with a minimisation method, Comm Num Mthds Eng, 1994, 10, pp 5965.Google Scholar
7. Morton, S.K. and Webber, J.P.H. Optimal design of a composite I-beam, Comp Struct, 1994, 28, pp 149168.Google Scholar
8. Morton, S.K., Jayatheertha, C. and Webber, J.P.H. Composite laminated plate design in the presence of stress gradients, to appear.Google Scholar
9. Schmit, L.A. and Farshi, B. Optimum laminate design for strength and stiffness, Int J Num MM Eng, 1973, 7, pp 519536.Google Scholar
10. Tauchert, T.R. and Adibhatla, S. Design of laminated plates for maximum stiffness, J Comp Mats, 1984, 18, pp 5869.Google Scholar
l1. Zabinsky, Z.B. Global optimization for composite structural design, 35th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Hilton Head, South Carolina, U.S.A., April 1994, pp 14061412.Google Scholar
12. Kogiso, N., Watson, L.T., Gordal, Z., Haftka, R.T. and Nagendra, S. Minimum thickness design of composite laminates subject to buck ling and strength constraints by genetic algorithms, 35th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Hilton Head, South Carolina, U.S.A., April 1994, pp 22572275.Google Scholar
13. Jones, R.M. Mechanics of Composite Materials, Scripta Book Co., 1975.Google Scholar