The Collapse of Fully Hybrid and Sectionally Hybrid Cylindrical Energy Absorbers under Impact Loading: An Experimental and Simulation-based Investigation

Meymand, Fatemeh Mahmoudi; Rahmani, Hossein; Moeinkhah, Hossein

doi:10.1007/s12221-022-5206-9

Cited by 4 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The researchers found that the fully hybridized samples exhibited the highest energy absorption. 26 Until now, the majority of research has concentrated on studying the impact shape, and no comprehensive study combining experimental and numerical methods has been reported on the behavior of composite materials under high-velocity impact conditions in various geometric shapes. This study focuses on investigating the way convex laminated composites react to high-velocity impact loading, with a special emphasis on their impact behavior.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of convexity in energy absorption of E‐glass reinforced epoxy composites under high velocity impact: An experimental and numerical investigation

Manesh,

Kazemian,

Rahmani

2023

Polymer Composites

Self Cite

View full text Add to dashboard Cite

Composite laminates have found extensive application in various industries, and numerous studies have been conducted to investigate their behavior in flat sheet configurations. The present study aims to extend this research by examining the behavior of convex composite specimens subjected to high velocity impact (HVI), and comparing their energy absorption and failure area to that of flat sheets made of glass fibers. Additionally, we seek to investigate the influence of curvature diameter on the energy absorption and fiber failure percentage of the composite specimens. Four series of composite laminates with distinct geometries, comprising a flat specimen and three convex composite specimens, were fabricated with nine layers each and diameters of 10, 15, and 20 cm. All specimens were fully clamped and subjected to empirical gas gun impact tests at three different velocities of 200, 250, and 300 m/s. The velocity values before and after the impact were measured using velocity sensors, and the energy absorption of the laminates was computed. Of the tested composite specimens, those with smaller diameters and greater curvature exhibited reduced fiber damage percentage and increased energy absorption. Compared to the flat specimens made of glass fibers, the convex specimens with a diameter of 10 cm exhibited an energy absorption increase of approximately 47%, while the specimens with diameters of 15 and 20 cm showed approximately energy absorption increases of 42% and 7%, respectively. The results were confirmed through simulation using finite element software ABAQUS/Explicit.Highlights Curved E‐glass laminates studied under high velocity impact which is done experimentally and numerically. Convexity increases energy absorption capacity of E‐glass reinforced epoxy composites. The results show that convexity can absorb more energy compared to flat panels. The damaged area of curved laminates are smaller than the flat one. The findings suggest that convexity can be a useful design feature for improving impact resistance in various applications.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Meymand et al studied the collapse behavior of cylindrical aluminum energy absorbers that were partially or fully hybridized with glass fibers and epoxy resin during low‐velocity impact. The researchers found that the fully hybridized samples exhibited the highest energy absorption 26 …”

Section: Introductionmentioning

confidence: 99%