Mechanical Properties Analysis of the New Bionic Honeycomb Structure Under Out-of-Plane Crushing

Published: Jan. 1, 2025

Honeycomb is a kind of material with excellent performance, such as being lightweight and high-strength, widely used in aerospace, automotive, construction, other fields. Inspired by the natural turtle shell, novel bionic honeycomb structure devised adding inner tubes sinusoidal ribs to traditional hexagonal honeycomb. The crashworthiness this innovative was meticulously assessed using numerical simulations theoretical analysis methods. results revealed that new surpasses under same thickness. It noted performance more fully utilized when amplitude rib closer quarter period (T/4). Additionally, an increase structure's thickness correspondingly elevates its crashworthiness. In summary, based on simplified super folding element theory, we introduced predictive model for crushing force structure. prediction shows consistency results.

Language: Английский

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Flexible Vibration Sensors with Omnidirectional Sensing Enabled by Femtosecond Laser-Assisted Fabrication

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 211 - 211

Published: Jan. 16, 2025

Vibration sensors are integral to a multitude of engineering applications, yet the development low-cost, easily assembled devices remains formidable challenge. This study presents highly sensitive flexible vibration sensor, based on piezoresistive effect, tailored for detection high-dynamic-range vibrations and accelerations. The sensor’s design incorporates polylactic acid (PLA) housing with cavities spherical recesses, polydimethylsiloxane (PDMS) membrane, electrodes that positioned above. Employing femtosecond laser ablation template transfer techniques, parallel groove array is created within polymer sensing layer. includes conductive pathways, integrates stainless-steel balls as oscillators further amplify sensitivity. performance evaluated over frequency range 50 Hz 400 from 1 g 5 accelerations, exhibiting linear correlation coefficient 0.92 between voltage output acceleration. It demonstrates stable accurate responses signals such drills mobile phone ringtones, well robust responsiveness omnidirectional long-distance vibrations. simplicity in microstructure fabrication, ease assembly, low cost render it promising applications machinery rotating or vibrating components.

Language: Английский

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Mechanics of curved chiral beam based three-dimensional metamaterial

Thin-Walled Structures, Journal Year: 2025, Volume and Issue: unknown, P. 112995 - 112995

Published: Jan. 1, 2025

Language: Английский

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Machine learning-based mechanical performance prediction and design of lattice structures

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110230 - 110230

Published: April 1, 2025

Language: Английский

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Dynamic mechanical characteristics of starch-based shear thickening fluids at high strain rates

Materials & Design, Journal Year: 2025, Volume and Issue: unknown, P. 113911 - 113911

Published: April 1, 2025

Language: Английский

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Synergistic effects of various hollow particles on mechanical and adhesive properties of impact protection film

Journal of Polymer Research, Journal Year: 2025, Volume and Issue: 32(5)

Published: April 28, 2025

Language: Английский

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