Structural optimization of stiffener layout for stiffened plate using hybrid GA

Putra, Gerry Liston; Kitamura, Mitsuru; Takezawa, Akihiro

doi:10.1016/j.ijnaoe.2019.03.005

Cited by 23 publications

(8 citation statements)

References 12 publications

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“…As they have the advantage of a light weight, reinforced thin-walled structures are widely used in aviation, shipbuilding and construction engineering [1][2][3][4][5]. By reinforcing ribs, the stiffness or strength of thin-walled structures could be significantly raised without increasing the weight of the whole structure by much.…”

Section: Introductionmentioning

confidence: 99%

Research on the Rational Design Method of Strength Reinforcement for Thin-Walled Structure Based on Limit Load Analysis

Wang

Qian

2022

Applied Sciences

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Thin-walled structures subjected to internal or external pressure usually need to be reinforced with ribs. The design of ribs is generally based on experiences in engineering, and the results are often very conservative. In this paper, an approach for the rational design of reinforced ribs on thin-walled structures is proposed based on the limit load analysis method, maximizing the limit load of the reinforced thin-walled structure or minimizing the weight of the reinforced ribs. Firstly, the limit load numerical analysis was conducted to study rib forms at the continuous and discontinuous regions of the structure and find the rational ribs which provide the most effective reinforcement for the structure. Then, using the proposed rib forms, an engine test cabin was re-designed based on the limit load analysis to verify the feasibility and effects of the rib design. The engine test cabin after the redesign of the rib plate can reach 98% of the limit load of the original test cabin while the weight of reinforcing ribs is only 62% of the weight of the original ones, which means that the reinforcement design approach based on the limit load analysis method and the rib forms proposed in this paper is effective and feasible, and can achieve a structural lightweight design.

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Section: Introductionmentioning

confidence: 99%

Research on the Rational Design Method of Strength Reinforcement for Thin-Walled Structure Based on Limit Load Analysis

Wang

Qian

2022

Applied Sciences

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“…High manufacturing costs due to rising raw material prices are one of the major challenges facing the shipbuilding industry (Putra et al 2019). Comprehensive research on structural optimization that reduces material costs is required to solve this problem.…”

Section: Introductionmentioning

confidence: 99%

Study on optimal design of hatch cover via a three-stage optimization method involving material selection, size, and plate layout arrangement

Putra

Kitamura

2021

Ocean Engineering

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“…Through the application of computational modelling along with constructal design it is possible to make recommendations about the suitable geometry to be used for plates (2018). Different techniques have been employed to optimise the plate stiffener assembly (Cunha et al, 2019;Kalassy & Marcelin, 1997;Putra et al, 2019;Mizusawa et al, 1979;Li et al, 2013). Cunha et al (2019) performed an investigation of a Genetic Algorithm (GA) based mathematical optimization of stiffener-plates assembly exposed to transverse loads.…”

Section: Introductionmentioning

confidence: 99%

“…A similar study on stiffener optimisation using GA was done by Kallassy et al (1997). Putra et al (2019) optimized stiffened plates used in ships using hybrid GA technique, while Mizusawa et al (1979) performed the free vibration of thin plates by the Rayleigh-Ritz technique. Li et al (2013) optimized the topology to create the stiffener layout for stiffener-plate assembly.…”

Section: Introductionmentioning

confidence: 99%

Parametric investigation of vibration of stiffened structural steel plates using finite element analysis and grey relational analysis

Srivastava¹,

Dwivedi²,

Mukhopadhyay³

2021

Rep. Mech. Eng.

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Thin plates with arbitrary shapes and stiffeners find wide usage in construction, aerospace, marine, etc. industries. In the present work a parametric investigation of thin structural steel plates has been carried out. The design parameters considered were the subtended angle and aspect ratio of plates to account for the different shapes of plates used for various applications. Another design parameter that was considered is the stiffener and its different orientation. The impact of varying parameters on the first five modal frequencies and in turn the stiffness was considered as the response. Finite element method (FEM) coupled with Taguchi’s L16 orthogonal array and grey relational analysis was used to maximize the first five natural frequencies simultaneously. The thin plate was subjected to modal analysis when all its sides are in simply supported boundary condition. The optimum combination of design variables predicted by grey relational analysis is a thin plate with 80° subtended angle, 1.75:1 aspect ratio and crossed stiffener orientation for simultaneous maximization of the frequencies. Analysis of variance revealed highest contribution of stiffener type which affects the first 5 natural frequencies simultaneously.

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Structural optimization of stiffener layout for stiffened plate using hybrid GA

Cited by 23 publications

References 12 publications

Research on the Rational Design Method of Strength Reinforcement for Thin-Walled Structure Based on Limit Load Analysis

Research on the Rational Design Method of Strength Reinforcement for Thin-Walled Structure Based on Limit Load Analysis

Study on optimal design of hatch cover via a three-stage optimization method involving material selection, size, and plate layout arrangement

Parametric investigation of vibration of stiffened structural steel plates using finite element analysis and grey relational analysis

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