Searched for: subject%3A%22stiffness%22
(1 - 9 of 9)
document
Wang, Z. (author), Peeters, D.M.J. (author), De Breuker, R. (author)
This work presents a new aeroelastic optimisation framework for the preliminary design of variable stiffness composite wing structures. The framework is constructed by sequentially and iteratively solving two sub-problems: aeroelastic tailoring and lay-up retrieval, using gradient-based algorithms with full-analytical sensitivities provided....
journal article 2022
document
Hong, Z. (author), Peeters, D.M.J. (author), Turteltaub, S.R. (author)
In this paper, design strategies are developed to explore better approaches of enforcing local layer-wise curvature constraints in the optimization of variable stiffness laminates in order to ensure the manufacturability of optimized designs based on the limitations of automated fiber placement. The methods developed here aim to improve an...
journal article 2020
document
Zucco, G. (author), Oliveri, V. (author), Rouhi, M. (author), Telford, R. (author), Clancy, G. (author), McHale, C. (author), O'Higgins, R. (author), Young, T. M. (author), Weaver, P. M. (author), Peeters, D.M.J. (author)
Automated manufacturing of thermoplastic composites has found increased interest in aerospace applications over the past three decades because of its great potential in low-cost, high rate, repeatable production of high performance composite structures. Experimental validation is a key element in the development of structures made using this...
journal article 2020
document
Peeters, D.M.J. (author), Irisarri, François Xavier (author), Groenendijk, Chris (author), Růžek, Roman (author)
Composite materials are finding increasing application, for example in commercial aircraft. Traditionally fiber angles are restricted to 0°,±45° and 90°. The current work exploits the possibility of using multiple ’non-conventional’ laminates where either fiber steering (‘variable stiffness’), ply drops (‘variable thickness’), or a...
journal article 2019
document
Peeters, D.M.J. (author), Lozano, Gustavo Gonzalez (author), Abdalla, M.M. (author)
A method to optimise the fibre angle distribution of variable stiffness laminates is proposed. The proposed method integrates a fibre angle retrieval step with a fibre angle optimisation procedure. A multi-level approximation approach is used in combination with the method of successive approximations. First, fibre angle retrieval is done by...
journal article 2018
document
Peeters, D.M.J. (author), Hong, Z. (author), Abdalla, M.M. (author)
A way to approximate the compliance of composites for optimisation is described. A two-level approximation scheme is proposed inspired by traditional approximation concepts such as force approximations and convex linearisation. In level one, an approximation in terms of the reciprocal in-plane stiffness matrix is made. In level two, either...
journal article 2018
document
Peeters, D.M.J. (author), Irisarri, F.X. (author), Abdalla, M.M. (author)
Modern composite structures o<br/>er two avenues of optimising performance. One, optimising a single stacking sequence over the structure leading to constant sti<br/>ness designs. Two, varying the sti<br/>ness over the structure. This may be achieved by dropping plies, changing the thickness, or by steering the fibres, changing the fibre angles....
conference paper 2016
document
Peeters, D.M.J. (author), Abdalla, M.M. (author)
A method to optimise the fibre angle distribution of variable stiffness laminates is proposed. The proposed method integrates a fibre angle retrieval step with a fibre angle optimisation procedure. A multi-level approximation approach is used in combination with the method of successive approximations. First, fibre angle retrieval is done by...
conference paper 2015
document
Jeliazkov, M. (author), Sardar Abadi, P.M. (author), Lopes, C.S. (author), Abdalla, M.M. (author), Peeters, D.M.J. (author)
A computationally efficient two-level design methodology is developed for the optimization of stiffened compression loaded panels having variable stiffness panels as their skin. In the first step extensive bay panel optimization is performed using a Rayleigh-Ritz energy method coupled with a specialized Genetic Algorithm. Results in agreement...
conference paper 2015
Searched for: subject%3A%22stiffness%22
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