Design considerations for variable stiffness, doubly curved composite plates

Thomas, Matthew A.; Hallett, Stephen R.

doi:10.1016/j.compstruct.2020.112170

Cited by 11 publications

(3 citation statements)

References 45 publications

(83 reference statements)

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“…where d can be obtained by substituting the coordinates of any of the corner points into equation (6).…”

Section: Detailed Methodologies and Techniquesmentioning

confidence: 99%

“…The variable-thickness (VT) design of composite laminates, which can alter the mechanical properties of different partitions by specifying different ply quantities, orientations, and stacking sequences, is considered as one of the most effective ways to fully exploit the designability and maximize the efficiency of structures. The design of such load-tailored and locally varying composite structure remains a challenge, and the related optimization methods are constantly being innovated, such as the blending approaches, [1][2][3][4] the design methods developed from a topology perspective, [5][6][7] the bilevel design method, 8 and multistep method. 9,10 Additionally, the smear-stiffness method packaged in OptiStruct are also popular ways.…”

Section: Introductionmentioning

confidence: 99%

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Integrated design for the forming process and structural performance of variable-thickness laminates

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The manufacturing process of composite laminated parts has a significant influence on the final performance, especially since the draping process can change the predefined fiber orientation at local sites. With the maturing of draping-process simulation technology, an integrated structure–process–performance design has become possible. This article reports a computational framework for the integrated design of the draping process and structural performance of variable-thickness (VT) laminates. The framework is a two-loop optimization workflow. Specifically, a genetic draping optimization method features the inner optimization loop to find the optimal draping strategy and obtain the resulting fiber orientations and manufacturing layout. Structural performance optimization outlines the outer optimization loop, where a parametric method for the physical configuration of VT laminates is proposed to evaluate the structural performance considering the draping strategy. The entire framework is demonstrated by an automotive B-pillar reinforcement. The benefits of incorporating the draping design versus no draping design are illustrated by comparing the corresponding design results. The comparison results show that the integrated design not only contributes to pretreating manufacturing defects but also allows the use of reoriented fiber directions caused by draping to improve the mechanical properties and engage the load bearing. It thus achieves a further weight reduction of 18.63%. This framework facilitates resource-friendly process design, comprehensive performance evaluation, and structurally efficient laminate design.

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“…where d can be obtained by substituting the coordinates of any of the corner points into equation (6).…”

Section: Detailed Methodologies and Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integrated design for the forming process and structural performance of variable-thickness laminates

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

show abstract

“…Likewise, composite plates with elliptical cutouts were investigated for the optimum structural stiffness that also effected the natural frequency of plates [6]. Recently, steering around open-hole tensile geometry was applied to 3D printing process to reduce stress concentrations, that has the same principals as AFP process [26].…”

Section: Introductionmentioning

confidence: 99%

Design of variable stiffness composites for maximum fundamental frequency considering manufacturing constraints of tow steering

Rashed

Demir

2022

Composite Structures

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Algorithms for Constructing Initial and Offset Path of Automated Fiber Placement for Complex Double-Curved Surfaces

Wang

et al. 2021

Appl Compos Mater

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Design considerations for variable stiffness, doubly curved composite plates

Cited by 11 publications

References 45 publications

Integrated design for the forming process and structural performance of variable-thickness laminates

Integrated design for the forming process and structural performance of variable-thickness laminates

Design of variable stiffness composites for maximum fundamental frequency considering manufacturing constraints of tow steering

Algorithms for Constructing Initial and Offset Path of Automated Fiber Placement for Complex Double-Curved Surfaces

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