Pre-stressed thin tubular composite energy absorbers for improved impact energy absorption

Gattineni, Venkateswarlu; Nathi, Venukumar

doi:10.1016/j.rineng.2020.100102

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Numerous studies have shown that CFRP when used as thin tubular energy absorbers shall have higher SEA compared to metallic counterparts Reddy TJ et al (4). If pre-stress can be induced into these tubes which can result in tensile stress, during a collision, the compressive impact force must first overcome the tensile pre-stress and then further deform to get crushed sacrificially to absorb energy Gattineni V et al (5). This way the SEA is expected to increase further.…”

Section: Introductionmentioning

confidence: 99%

Pre-Tensioned CFRP Tubes for Improved Energy Absorption

Gattiineni¹,

Nathi²

2022

ECS Trans.

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The use of materials like CFRP has shot into prominence to achieve lightweight designs without compromising on structural integrity. Circular thin tubes are often employed in passenger cars as energy absorbers to absorb the impact energy during an accident. When such tubes are made of materials like CFRP it contributes to weight reduction besides leading to reduced fuel consumption. Also due to their lower weight, such tubes shall be capable of absorbing more energy per unit mass compared to metallic designs, which is defined as specific energy absorption capacity (SEA). Pre-stressing techniques are widely used by civil engineers across the globe to impart more stress/energy bearing capacity for the structures. Based on pre-stressing principles, the introduction of pre-tension during the fabrication stage for thin CFRP tubular structures has been experimentally studied to validate the applicability of pre-stress concepts for more SEA. The study investigates experimentally the additional advantage prestressing can bring for a CFRP tube in terms of SEA improvement.

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Section: Introductionmentioning

confidence: 99%