Cross-sectional shape optimization of thin-walled columns enduring oblique impact loads

Tanlak, Niyazi

doi:10.1016/j.tws.2016.09.009

Cited by 12 publications

(3 citation statements)

References 42 publications

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“…Addressing computational problems typically requires the use of meta-models or RBFs like simulation framework results. Moreover, optimisation research uses metamodels to assess structural crashworthiness (Tanlak, 2016;Karagöz and Yıldız, 2017;Renreng and F Djamaluddin, 2019;Djamaluddin, 2022b;Djamaluddin et al, 2051); the emphasis is on evaluating how thin-walled systems absorb energy. Extensive research has been performed to enhance the crashworthiness of foam-packed columns by altering wall dimensions and foam density.…”

Section: Figurementioning

confidence: 99%

Finite element analysis and optimization of foam filled fender under quasi static and dynamic responses

Djamaluddin

2023

Front. Mech. Eng.

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Mainly composed of elastic materials, ship fenders are utilised on all kinds of vessels for the protection of berthing structures and the prevention of damage due to heavy crash loads. This study aims to enhance deformation mode and crash performance of foam-filled fenders under quasi-static and dynamic loadings. Six models of ship fender’s structure are chosen for simulation test. The fenders are examined for crashworthiness parameters such as crushing force efficiency (CFE) and specific energy absorption (SEA). Finite element analysis is conducted for estimating crash responses then compared to an appropriate reference and experiment result. Four design variables are considered for instance height, foam density, thickness, and material for optimization. Non-dominated Sorting Genetic Algorithm II as multi-objective optimization approach are used to obtain the maximum of Specific Energy Absorption (SEA) and the minimum of Crushing Force Efficiency (CFE). Based on the results of the optimization, the best performance is observed in model 5, however it can be replaced the traditional fender design.

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Section: Figurementioning

confidence: 99%

Finite element analysis and optimization of foam filled fender under quasi static and dynamic responses

Djamaluddin

2023

Front. Mech. Eng.

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“…6 In 1989, Abramowicz and Wierzbicki 7 proposed the theory of superfolding elements which was employed to research the axial crushing of thin-walled structures, and obtained a good agreement between theory and experiments. Tanlak 8 adopted spline polynomials to characterize the bisymmetric cross-sectional shape in 2016, and used the NSGA-II algorithm to obtain a cross-sectional shape with good crashworthiness under oblique impact loading. In 2017, Baroutaji et al 9 had researched the influence of different crushing forms and cross-sectional shapes on the crashworthiness of thin-walled structures, which were employed to optimize thin-walled structures.…”

Section: Introductionmentioning

confidence: 99%

Energy absorption characteristic and crashworthiness optimization design of VRB-VCS structures under manufacturing constraints

Luo

Duan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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After fully understanding the limitations of traditional variable rolled blank (VRB) and variable cross-sectional (VCS) double-hat shaped beam structures on the energy absorption ability and collision safety optimal design, we propose a variable rolled blank and variable cross-sectional (VRB-VCS) double-hat shaped beam structure with piecewise exponential function. Firstly, the thickness distribution function and the mathematical model of constraint conditions are derived under the constraints of manufacturing rollability. The corresponding finite element (FE) model of the VRB-VCS structure is validated by the dropping hammer impact axial crush experiments, which can predict the crushing process with high fidelity. Secondly, the parametric researches of the energy absorption characteristic of VRB-VCS structure are carried out based on the FE model. The reasonable range of each parameter is obtained by analyzing the influence of the thickness distribution and other key cross-sectional parameters on the energy absorption characteristic and deformation mode of VRB-VCS structure. Finally, the Pareto frontier solutions of the linear and piecewise exponential function VRB-VCS structures are obtained by the multi-objective optimization of the corresponding structures. In comparison to VCS, VRB and linear VRB-VCS structures, the proposed VRB-VCS structure has a higher energy absorption capacity and greater crashworthiness.

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“…One of the most important problem of vehicles collision is frontal impact for decades [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental approach of various sectioned new concept of the crash-boxes to determine the reliability and crashworthiness of the vehicles during frontal impacts

Yilmazcoban

Adanur

Bakhtiyar

et al. 2019

Sakarya University Journal of Science

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Cross-sectional shape optimization of thin-walled columns enduring oblique impact loads

Cited by 12 publications

References 42 publications

Finite element analysis and optimization of foam filled fender under quasi static and dynamic responses

Finite element analysis and optimization of foam filled fender under quasi static and dynamic responses

Energy absorption characteristic and crashworthiness optimization design of VRB-VCS structures under manufacturing constraints

Numerical and experimental approach of various sectioned new concept of the crash-boxes to determine the reliability and crashworthiness of the vehicles during frontal impacts

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