Enhanced filler-tube wall interaction in liquid nanofoam-filled thin-walled tubes

Li, Mingzhe; Li, Junfeng; Barbat, Saeed; Baccouche, Ridha; Lu, Weiyi

doi:10.1016/j.compstruct.2018.05.101

Cited by 21 publications

(7 citation statements)

References 45 publications

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“…Liquid flow in nanochannels is of great importance for a variety of applications, including water filtration, , drug delivery, , heterogeneous catalysis, , chemical and bio-sensing, , and many others. Especially, forced liquid flow in hydrophobic nanochannels is employed as a novel mechanism for energy storage and mitigation in a liquid nanofoam (LN) system. − In an LN system composed of a hydrophobic nanoporous media and a nonwetting liquid, the liquid molecules are forced into the nanochannels when the applied external load is sufficient to overcome the capillary force. As the external load is removed, the intruded liquid can be fully or partially expelled from the hydrophobic nanochannels. , Because of its highly hysteretic mechanical response, tremendous amount of energy is mitigated by the LN system.…”

Section: Introductionmentioning

confidence: 99%

Effect of Extra Gas Amount on Liquid Outflow from Hydrophobic Nanochannels: Enhanced Liquid–Gas Interaction and Bubble Nucleation

2020

Langmuir

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Understanding liquid motion in nanoenvironment is of fundamental importance in nanofluidics-based systems. While the liquid outflow from hydrophobic nanochannels can significantly affect system performance, its underlying mechanism remains unclear so far. Here, we present an experimental study of the gas-phase effect on liquid outflow behavior from hydrophobic nanochannels in a liquid nanofoam (LN) system. Four LN samples, consisting of same liquid−solid composition but different amounts of the gas phase, are characterized by cyclic quasi-static compression tests. A remarkable difference in the LN system reusability has been observed, indicating that the liquid outflow behavior is highly sensitive to the amount of the gas phase. As the gas amount increases, the degree of liquid outflow from hydrophobic nanochannels is considerably promoted. This promotive effect is because of the suppression of gas outflow and acceleration of bubble nucleation in the nanochannels. These fundamental findings open a new perspective on liquid outflow behavior and can facilitate the design of reusable nanofluidics-based energy absorbers.

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Section: Introductionmentioning

confidence: 99%

Effect of Extra Gas Amount on Liquid Outflow from Hydrophobic Nanochannels: Enhanced Liquid–Gas Interaction and Bubble Nucleation

2020

Langmuir

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“…The dynamic impact behavior of the cushion pads was characterized by a lab‐customized drop tower apparatus (inset in Figure 6d). [ 61 ] Before each test, the cushion pad was placed on the flat base of the drop tower. As the test was triggered, a 2.3 kg drop mass fell freely and impacted the cushion pad.…”

Section: Methodsmentioning

confidence: 99%

A Nanoconfined Water–Ion Coordination Network for Flexible Energy‐Dissipation Devices

Gao

Zhan

et al. 2023

Advanced Materials

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Water‐ion interaction in a nanoconfined environment that deeply constrains spatial freedoms of local atomistic motion with unconventional coupling mechanisms beyond that in a free, bulk state is essential to spark designs of a broad spectrum of nanofluidic devices with unique properties and functionalities. Here, we report that the interaction between ions and water molecules in a hydrophobic nanopore forms a coordination network with an interaction density that is nearly four‐fold as that of the bulk counterpart. Such strong interaction facilitates the connectivity of the water‐ion network and is uncovered by corroborating the formation of ion clusters and the reduction of particle dynamics. We design a liquid‐nanopore energy dissipation system and demonstrate in both molecular simulations and experiments that the formed coordination network controls the outflow of confined electrolytes along with a pressure reduction, capable of providing flexible protection to personnel and devices and instrumentations against external mechanical impacts and attacks.This article is protected by copyright. All rights reserved

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“…The surrounding part of foam filler can be approximatively subjected to the multi-axial loading with folding, which results in more and closer interaction between foam cells and nanocrystallization wall. In addition, the interaction effect is generated by additional energy dissipation mechanism, including the resistance of inward bulking and the interfacial friction between the filler and the tube wall [15,42]. The collapse mode for FLNT-4 under axial compression is shown in Figure 21.…”

Section: Local Nanocrystallization Layouts On Interaction Effectsmentioning

confidence: 99%

“…Sun and his co-workers [20,[29][30][31][32][33][34] studied crashworthiness for a series of foam-filled thin-walled structures and carried out multi-objective optimization for the structures. In addition, the crashworthiness for thin-walled structures filled with different foam fillers, for examples, polyurethane foam [35][36][37][38], polyvinyl chloride foam [39], auxetic foam [40,41], liquid nanofoam [42,43], etc., was further studied.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Study on Energy Absorption of Foam-Filled Local Nanocrystallized Thin-Walled Tubes under Axial Crushing

Wang

Zhao

et al. 2022

Materials

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A crashworthiness design of foam-filled local nanocrystallized thin-walled tubes (FLNTs) is proposed by using foam-filled structures and ultrasonic impact surface treatment. The crashworthiness and deformation modes of FLNTs are studied using an experiment and numerical analysis. A finite element numerical model of FLNTs is established, and the processing and test platform of FLNTs is set up to verify the numerical predication and analytical design. The results show that local nanocrystallization is an effective method to enhance crashworthiness for hexagonal FLNTs. The FLNTs with four circumferential continuous stripes of surface nanocrystallization exhibit a level of 47.12% higher specific energy absorption than the untreated tubes in numerical simulations for tubes with a 50% ratio of nanocrystallized area. Inspired by the strength mechanism, a novel nested foam-filled local surface nanocrystallization tube is further designed and studied in detail.

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Enhanced filler-tube wall interaction in liquid nanofoam-filled thin-walled tubes

Cited by 21 publications

References 45 publications

Effect of Extra Gas Amount on Liquid Outflow from Hydrophobic Nanochannels: Enhanced Liquid–Gas Interaction and Bubble Nucleation

Effect of Extra Gas Amount on Liquid Outflow from Hydrophobic Nanochannels: Enhanced Liquid–Gas Interaction and Bubble Nucleation

A Nanoconfined Water–Ion Coordination Network for Flexible Energy‐Dissipation Devices

Numerical Simulation and Experimental Study on Energy Absorption of Foam-Filled Local Nanocrystallized Thin-Walled Tubes under Axial Crushing

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