Suspensions of lyophobic nanoporous particles as smart materials for energy absorption

Belogorlov, A. A.; Borman, V. D.; Khlistunov, I. A.; Tronin, V. N.; Neimark, Alexander V.

doi:10.1016/j.jcis.2021.04.132

Cited by 2 publications

(2 citation statements)

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“…After the extrusion, there is no residual volume strain. According to early stage of the P − ∆V curves obtained from the subsequent compressive cycles, we can conclude that there are amount of fluid molecules remains the confined nanopore after the extrusion due to fluid entrapment and slow outflow in the pore network [37]. The decreased accessible infiltrating volume results in the hysteresis of the initiation of the infiltration and the increased critical infiltration pressure, indicating the residual fluid has a significant influence on the nanopores with large pore size.…”

Section: Mechanical Response and Energy Absorptionmentioning

confidence: 84%

“…In recent years, the research on the dynamic behavior of NLCs has mainly focused on the strain rate effect of the infiltration. However, based on the split Hopkinson pressure bar (SHPB) and drop weight experiments and molecule dynamic simulation, the conclusions are still confusing, showing positive and independent strain-rate correlations [36,37]. The energy absorption density under the dynamic loads is confirmed to be much higher than that in quasi-static [19,38].…”

Section: Introductionmentioning

confidence: 99%

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Energy absorption and storage of nanofluidic solid–liquid composite material under high strain rates

Huang,

Feng,

et al. 2023

Smart Mater. Struct.

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Efficient energy absorption and dissipation are crucial for the development of novel protective materials under intensive dynamic loadings. Nanofluidic solid–liquid composite materials (NLCs) provide a promising pathway to engineer such materials owing to their rapid and reversible energy absorption and storage performance. In this study, we conducted systematic experiments on nanoporous SiO2 based NLCs to gain a better understanding of the dynamic mechanical behavior and the underlying energy absorption and storage mechanisms under compressions with varying strain rates. Our findings indicate that the energy absorption in terms of dissipation and storage under the repeat compressive loadings includes two stages. The initial stage indicates the maximum energy absorption capacity, which is efficiently improved by the adding electrolyte solution and the retreatment. The stable energy absorbing stage represents the reversible energy absorption and storage capacity of the NLCs. Based on the noticeable strain rate effect, a three-stage mechanism is proposed to explain the significant increase of energy absorption capacity with the varying compressive strain rates. The superior reusable energy absorption capacity of NLCs holds great promise for their use as excellent energy-absorbing materials under intensive impulsive loadings.

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Section: Mechanical Response and Energy Absorptionmentioning

confidence: 84%