Strength optimization of laminated composites with respect to layer thickness and/or layer orientation angle

Fukunaga, H.; Vanderplaats, G. N.

doi:10.1016/0045-7949(91)90413-g

Cited by 37 publications

(10 citation statements)

References 8 publications

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“…as in Zhu et al (2017), Hyer and Charette (1987), Kriechbaum et al (1992), Reuschel and Mattheck (1999), Tosh and Kelly (2000), and Crosky et al (2006). Work on optimum design problems for material orientations that formally take strengths into account can also be found in the literature (Fukunaga and Vanderplaats 1991;Groenwold and Haftka 2006;Hammer and Pedersen 1996;Park et al 2001;Kathiravan and Ganguli 2007;Topal and Uzman 2008). The basic approach in these papers was to select appropriate failure criteria, formulate a problem which take these criteria into account and then solve it using numerical optimisation methods.…”

Section: Introductionmentioning

confidence: 99%

“…Optimisation methodologies can be used to tailor composites to specific structural requirements, for example stiffness (Foldager et al 1998;Lund and Stegmann 2005;Setoodeh et al 2006;Ferreira et al 2014;Ferreira and Hernandes 2015;Muramatsu and Shimoda 2019), strength (Schmit and Farshi 1973;Fukunaga and Vanderplaats 1991;Groenwold and Haftka 2006;Lund 2017), buckling load (Hu 1994;Lindgaard and Lund 2011;Kaveh et al 2019), natural frequency (Abdalla et al 2007;Karakaya and Soykasap 2011;Koide and Luersen 2013) and layer delamination (Hohe and Becker 2002;Ferreira et al 2011). An optimisation process can be classified as constant stiffness design, which according to Ghiasi et al (2009) deals with composite laminates with a uniform stacking sequence throughout the entire structure, or variable stiffness design (Ghiasi et al 2010), where the stacking sequence varies through the structural domain.…”

Section: Introductionmentioning

confidence: 99%

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Optimal orientation of fibre composites for strength based on Hashin’s criteria optimality conditions

Ferreira

Ashcroft

2020

Struct Multidisc Optim

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The Hashin's strength criteria are usually employed in first ply failure and damage-onset analysis of fibre-reinforced composites. This work presents optimality conditions of local material orientations for these criteria, in terms of principal stresses and material strength parameters. Each criterion (matrix tensile/compressive, fibre tensile/compressive modes) has its conditions separately derived, analytically, based on a fixed stress field assumption. The conditions found show that orientations which coincide and do not coincide with principal stress directions may minimise local failure indices. These solutions are employed in a proposed algorithm, named HA-OCM (Hashin Optimality Criteria Method), which selectively satisfies the matrix failure modes (either tensile or compressive), iteratively and finite element-wise in composites. It is demonstrated that the HA-OCM is able to design single-layer plane structures with improved failure loads in comparison with designs following only maximum (in absolute) principal stress orientations. Results show that the material orientations have a trend to end up either aligned or at 90 • with maximum in absolute principal stress directions. Global optima for compliance are, however, not guaranteed. To give an idea of gains in terms of failure loads, some HA-OCM designs show improvements of 71% and 140%, for example, in comparison with principal stress design.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal orientation of fibre composites for strength based on Hashin’s criteria optimality conditions

Ferreira

Ashcroft

2020

Struct Multidisc Optim

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“…The problem is to find the design resulting in the minimum value for an undesired feature or response of the structure or the maximum value for a desired feature. Accordingly, in some of the studies, the goal was to minimize laminate thickness, 12,17,35,38,59,60,64,83,84,110,129,136,143,155,157,165,170,174,188,191,206,211,225,234,253,254,259,265,267,268,282,286,293,315,317,319,333,343–345,350,351,360,379,380,387,396,408,410,411,415,428,438,498,501,505,535,539,541,592,595,617,…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of Composite Structures: A Literature Survey (1969–2009)

Sonmez

2016

Journal of Reinforced Plastics and Composites

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Optimum structural design of composites is a research subject that has drawn the attention of many researchers for more than 40 years with a growing interest. In this study, a review of the literature on this subject is presented. The papers are classified according to the type of the composite structure optimized in those studies, the loading conditions, the objective function, the structural analysis method, the design variables, the constraints, the failure criteria, and the search algorithm used by the researchers.

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“…e.g., Le or the optimization of ply thicknesses (like Fukunaga and Vanderplaats 1991;Omkar et al 2008) lead to problems with partially discrete search space. Stochastic optimizers like EAs are employed there (Adali et al 2003;Lopez et al 2009;Naik et al 2008;Akbulut and Sonmez 2008).…”

mentioning

confidence: 99%

Global laminate optimization on geometrically partitioned shell structures

Keller

2010

Struct Multidisc Optim

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A method aimed at the optimization of locally varying laminates is investigated. The structure is partitioned into geometrical sections. These sections are covered by global plies. A variable-length representation scheme for an evolutionary algorithm is developed. This scheme encodes the number of global plies, their thickness, material, and orientation. A set of genetic variation operators tailored to this particular representation is introduced. Sensitivity information assists the genetic search in the placement of reinforcements and optimization of ply angles. The method is investigated on two benchmark applications. There it is able to find significant improvements. A case study of an airplane's side rudder illustrates the applicability of the method to typical engineering problems.

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Strength optimization of laminated composites with respect to layer thickness and/or layer orientation angle

Cited by 37 publications

References 8 publications

Optimal orientation of fibre composites for strength based on Hashin’s criteria optimality conditions

Optimal orientation of fibre composites for strength based on Hashin’s criteria optimality conditions

Optimum Design of Composite Structures: A Literature Survey (1969–2009)

Global laminate optimization on geometrically partitioned shell structures

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