Design optimization of the bamboo-inspired foam-filled tube for high-speed train collision energy absorption

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 271, С. 109128 - 109128

Опубликована: Фев. 23, 2024

Язык: Английский

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Energy absorption performance of Kresling origami tubes under impact loading

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 282, С. 109682 - 109682

Опубликована: Авг. 29, 2024

Язык: Английский

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Energy absorption of graded thin-walled origami tubes

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 282, С. 109609 - 109609

Опубликована: Июль 29, 2024

Introducing origami with outstanding flexibility into thin-walled tubes can enhance their energy absorption performance. This paper first proposes a cutting and folding-based design route of which enables geometry gradients such as uniform, tapered, hourglass-shaped, ellipsoidal shapes. Subsequently, the finite element model proposed tube is established verified through comparisons experimental results. Numerical simulation results demonstrate that quasi-static capability graded closely related to folding angle, total number layers, Compared conventional octagonal (COT), initial peak force in experiences dramatic reduction, reaching maximum decrement 70.75%, while achieving 39.96% boost specific (SEA). Moreover, incorporation gradient shapes within facilitates more predictable controlled collapse pattern, leading an enhanced energy-absorbing efficiency than uniform tubes. study provides new insights balance shape.

Язык: Английский

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Bayesian optimization of origami multi-cell tubes for energy absorption considering mixed categorical-continuous variables

Thin-Walled Structures, Год журнала: 2024, Номер 199, С. 111799 - 111799

Опубликована: Март 27, 2024

Multi-cell structures have been widely utilized in energy-absorbing applications for their lightweight and superior mechanical properties. However, they may produce high peak forces that are harmful to occupant safety during a vehicle collision. In addition, the naturally formed folding global bending modes under axial loads can significantly restrict capability. this study, novel origami multi-cell structure is proposed avoid excessive at same time guide deformation mode improve Four cross-sectional types of investigated experimentally numerically. The results indicated web-to-web (W2W) type most promising energy absorption, while web-to-corner (W2C) yield low excellent our study cases. To further exploit potential these structures, multi-objective optimization required consider conflicting objectives maximizing capability minimizing force. it challenging traditional deal with continuous, integer, categorical variables simultaneously. Therefore, Bayesian method based on Hamming distance handle mixed categorical-continuous optimize tubes. optimal W2C decrease force by 30% keeping similar level specific compared W2C. Moreover, absorption 40% baseline design.

Язык: Английский

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Mountain-valley crease reconfiguration of 4-crease origami vertices and tessellations

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 273, С. 109224 - 109224

Опубликована: Март 25, 2024

Язык: Английский

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Design and Kinematic Analysis of Origami Honeycomb Metamaterials with One-DOF Radial Motion

Thin-Walled Structures, Год журнала: 2025, Номер unknown, С. 112978 - 112978

Опубликована: Янв. 1, 2025

Язык: Английский

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Deployment kinematics of axisymmetric Miura origami: Unit cells, tessellations, and stacked metamaterials

International Journal of Mechanical Sciences, Год журнала: 2022, Номер 232, С. 107615 - 107615

Опубликована: Авг. 8, 2022

Язык: Английский

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Origami-inspired metamaterials hierarchical structure with tailorable crushing behavior

Construction and Building Materials, Год журнала: 2022, Номер 345, С. 128328 - 128328

Опубликована: Июль 9, 2022

Язык: Английский

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Dynamic axial crushing behaviors of circular composite tubes with different reinforcing fibers and triggers

International Journal of Mechanical Sciences, Год журнала: 2022, Номер 244, С. 108083 - 108083

Опубликована: Дек. 27, 2022

Язык: Английский

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Mechanical response of tensegrity-origami solar modules

Applications in Engineering Science, Год журнала: 2023, Номер 17, С. 100174 - 100174

Опубликована: Дек. 19, 2023

This work studies the mechanics of novel origami solar modules with tensegrity architecture for integration in dynamic façades energy-efficient buildings. The analyzed are deployed by adjusting rest lengths cables attached to given nodes, so as form a origami. Their stiffness is tuned pretension actuation cables, when deployment motion locked. insertion thermal or photovoltaic panels into rigid elements module makes it possible positive-energy systems. kinematics and investigated structures through analytic numerical methods. Two folding motions examined: open close track sun rays. rapid prototyping physical mock-up permits an experimental validation force–displacement response configuration sun-tracking motion. A procedure computation fundamental vibration modes frequencies quadrangular also given, expected system under wind loading outlined.

Язык: Английский

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