A Genetic Algorithm Based Blending Scheme for Design of Multiple Composite Laminates

Genetic algorithms (GA) are widely used for stacking sequence design of composite laminates. Design of large composite structure is done by subdividing it into a number of local panel design problems. Independent design of local panels leads to stacking sequence mismatch (referred to as blending issue) between adjacent panels. Blending is important for both structural integrity and manufacturability of final designs. In this paper, we present a robust, simple, and efficient way to impose blending in a GA framework for multiple composite laminates design. A multi-chromosomal GA is proposed to implement a novel parametrization of composite laminate stacking sequence that seamlessly blends stacking sequence across multiple laminates. The advantages and the numerical issues of the present approach are addressed.

[1]  Nozomu Kogiso,et al.  Genetic algorithms with local improvement for composite laminate design , 1993 .

[2]  Raphael T. Haftka,et al.  Stacking sequence optimization of simply supported laminates with stability and strain constraints , 1992 .

[3]  Raphael T. Haftka,et al.  Composite wing structural design optimization with continuity constraints , 2001 .

[4]  Zafer Gürdal,et al.  General Blending Definitions for Stacking Sequence Design of Composite Laminate Structures , 2008 .

[5]  Layne T. Watson,et al.  Optimization and Blending of Composite Laminates Using Genetic Algorithms with Migration , 2003 .

[6]  Christos Kassapoglou,et al.  Stacking Sequence Blending of Multiple Composite Laminates Using Genetic Algorithms , 2002 .

[7]  L. T. Watson,et al.  A FORTRAN 90 genetic algorithm module for composite laminate structure design , 1998, Engineering with Computers.

[8]  Z. Gürdal,et al.  Optimal Design of Laminated Composite Plate for Maximum Postbuckling Strength , 2005 .

[9]  Layne T. Watson,et al.  Optimal design of composite wing structures with blended laminates , 2004 .

[10]  Layne T. Watson,et al.  COMPOSITE LAMINATE DESIGN OPTIMIZATION BY GENETIC ALGORITHM WITH GENERALIZED ELITIST SELECTION , 2001 .

[11]  R. Haftka,et al.  Optimization of laminate stacking sequence for buckling load maximization by genetic algorithm , 1993 .

[12]  Christine M. Anderson-Cook,et al.  Genetic algorithm optimization and blending of composite laminates by locally reducing laminate thickness , 2004 .

[13]  Mitsunori Miki,et al.  Optimum Design of Laminated Composite Plates Using Lamination Parameters , 1993 .