Assessment of four-variable refined shear deformation theory for low-velocity impact analysis of curved sandwich beams

Lezgy-Nazargah, M.; Etemadi, Ehsan; Hosseinian, Saeed

doi:10.1016/j.euromechsol.2022.104604

Cited by 6 publications

(2 citation statements)

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“…[12][13][14] Some scholars have studied the low-speed impact response of curved sandwich beams. 15,16 Li et al 17 designed a curved sandwich beam and investigated its nonlinear dynamics. Atteshamuddin et al 18 analyzed the Haiying Cao and Wenyi Bao equally contributed to the article.…”

Section: Introductionmentioning

confidence: 99%

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Manufacturing and mechanical testing of curved sandwich beams with zero‐Poisson's ratio honeycomb cores

Cao,

Bao,

Bai

et al. 2023

Polymer Composites

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In this research, free curling property of the over‐expanded honeycomb (OH) with zero Poisson's ratio was utilized to design and manufacture curved carbon fiber‐reinforced composite (CFRC) sandwich beams by hot compression molding technique and co‐curing process. Three‐point bending experiments were conducted to reveal the failure mechanism of these OH‐based curved sandwich beams with various curvatures. The results reveal that in this research no matter what the curvature is, the shearing fracture of the OH core controls the initial failure of the curved structure, which is followed by upper skin fracture, lower skin delamination and fracture. With the increase of curvature, the ultimate bearing capacity and flexural rigidity of the curved beams will increase. No debonding was observed in the experiments.Highlights Curved sandwich beams with zero‐Poisson's ratio honeycomb‐core was designed. Deformation process from arc, flattening to anti‐arc was revealed by testing. Strength of curved sandwich beams depends on shear strength of the honeycomb. Beams with smaller curvature have greater bearing capacity and stiffness.

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Section: Introductionmentioning

confidence: 99%

“…Then scholars in the domestic and overseas have carried out corresponding research, including a series of studies on composite curved beams 12–14 . Some scholars have studied the low‐speed impact response of curved sandwich beams 15,16 . Li et al 17 designed a curved sandwich beam and investigated its nonlinear dynamics.…”

Section: Introductionmentioning

confidence: 99%