2020
DOI: 10.1007/s00158-020-02565-9
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Probabilistic optimisation of mono-stringer composite stiffened panels in post-buckling regime

Abstract: In this paper, a multi-objective probabilistic design optimisation approach is presented for reliability and robustness analysis of composite structures and demonstrated on a mono-omega-stringer stiffened panel. The proposed approach utilises a global surrogate model of the composite structure while accounting for uncertainties in material properties as well as geometry. Unlike the multi-level optimisation approach which freezes some parameters at each level, the proposed approach allows for all parameters to … Show more

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Cited by 14 publications
(6 citation statements)
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“…1. The conventional RBDO methodology uses computationally intensive models or high-fidelity based surrogate models [4,5,8,27]. In this framework, multi-fidelity models are constructed using both HFM and LFM before RBDO process is carried out.…”
Section: Methodology Descriptionmentioning
confidence: 99%
See 1 more Smart Citation
“…1. The conventional RBDO methodology uses computationally intensive models or high-fidelity based surrogate models [4,5,8,27]. In this framework, multi-fidelity models are constructed using both HFM and LFM before RBDO process is carried out.…”
Section: Methodology Descriptionmentioning
confidence: 99%
“…The composite panel considered in this work is shown in Fig. 2 [27]. The geometry of this composite panel is parametrised by X1, X2, X3 and X4 which are stringer foot length, stringer height, horizontal distance between top and foot, and stringer top length, respectively.…”
Section: Numerical Model Descriptionmentioning
confidence: 99%
“…Although it is important to take into account manufacturing cost when designing a composite part, the safety/ reliability of the part is also a very important consideration to take into account as well, especially for parts used in aircraft. There are many examples in which the reliability of a structure is optimised under the presence of uncertainties (Farokhi et al 2020;Yoo et al 2020;Bacarreza et al 2014;Lopez et al 2016;Simoes et al 2006;Hu et al 2016). One notable example is (Farokhi et al 2020) in which the geometric design of an aircraft mono-stringer compositestiffened panel was optimised based on reliability.…”
Section: Introductionmentioning
confidence: 99%
“…There are many examples in which the reliability of a structure is optimised under the presence of uncertainties (Farokhi et al 2020;Yoo et al 2020;Bacarreza et al 2014;Lopez et al 2016;Simoes et al 2006;Hu et al 2016). One notable example is (Farokhi et al 2020) in which the geometric design of an aircraft mono-stringer compositestiffened panel was optimised based on reliability. Reliability was estimated based on buckling behaviour and under the presence of uncertainties in composite material properties.…”
Section: Introductionmentioning
confidence: 99%
“…Lopez et al [8] proposed a new RBDO algorithm that combined reliability analysis with deterministic optimisation process and demonstrated using a composite stiffened panel. Farokhi et al [9] introduced a global multi-objective probabilistic design optimisation approach, including reliability analyses of composite structures. Chen and Qiu [10] developed a reliability assessment for composite laminate structures with correlated elastic mechanical parameters that consider the correlations between different parameters.…”
Section: Introductionmentioning
confidence: 99%