生物启发预浸料碳纤维防撞箱在准静态轴向压缩下的能量吸收特性

IF 5.3 Q2 MATERIALS SCIENCE, COMPOSITES Composites Part C Open Access Pub Date : 2024-07-01 DOI:10.1016/j.jcomc.2024.100487
Fatima Ghassan Alabtah , Elsadig Mahdi , Marwan Khraisheh
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引用次数: 0

摘要

减轻汽车重量对于提高燃油效率和减少交通排放至关重要。与金属相比,传统的复合材料具有更好的能量吸收能力,但却受到脆性的限制。本研究从螳螂虾的自然防御机制中汲取灵感,引入了一种创新方法,以增强复合材料结构的耐撞性和能量吸收能力,从而优化安全性和性能。利用生物启发设计,我们开发了波纹状碳纤维增强聚合物(CFRP)防撞箱结构,旨在优化其能量吸收能力和碰撞力效率(CFE),以在交通安全领域实现潜在应用。通过一系列准静态轴向压缩试验,对波纹结构的性能与传统碰撞箱设计进行了对比评估。实验结果表明,生物启发结构改善了防撞性能。对层数和波纹的策略性处理带来了卓越的 CFE 值,表明碰撞行为更安全、更可控。7N-6L "配置具有七个波纹和六层 CFRP,具有最高的功效,达到了 1.08 的最佳 CFE 值。此外,与传统的钢制防撞箱相比,采用 7N-6L 波纹结构的 CFRP 防撞箱在大幅降低质量的同时,还具有极强的能量吸收能力,可吸收 2850 焦耳的能量,CFE 值为 0.91,几乎达到了理想的 CFE 值,并突出了其优越的轻质性能。这些结果凸显了结合生物启发设计开发坚固、轻质结构以提高耐撞性的潜力,为更安全、更可持续的交通解决方案铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Energy absorption characteristics of a bio-inspired prepreg carbon fiber crash box under quasi-static axial compression

Reducing vehicle weight is crucial for enhancing fuel efficiency and reducing emissions in transportation. Traditional composite materials offer improved energy absorption over metals yet are limited by brittleness. This study introduces an innovative approach, inspired by the mantis shrimp's natural defense mechanisms, to enhance the crashworthiness and energy absorption of composite structures, optimizing safety and performance. Utilizing a bio-inspired design, we developed corrugated Carbon Fiber Reinforced Polymer (CFRP) crash box structures, aiming to optimize their energy absorption capabilities and crash force efficiency (CFE) for potential applications in transportation safety. Through a series of quasi-static axial compression tests, the corrugated structures' performance was evaluated against traditional crash box designs. The experimental results demonstrate that the bio-inspired configurations improved crashworthiness characteristics. Strategic manipulation of layer numbers and corrugations led to superior CFE values, indicative of safer, more controlled collision behavior. The “7N-6L” configuration featuring seven corrugations with six layers of CFRP demonstrated the highest efficacy, achieving an optimal CFE of 1.08. This configuration demonstrated a Specific Energy Absorption (SEA) of 1.56 J/g and an Energy Absorption (Ea) of 42.56 J. Furthermore, compared to conventional steel crash boxes, the CFRP crash box with 7N-6L corrugated structure showcased competitive energy absorption capabilities with significantly reduced mass, absorbing 2850 J with a CFE of 0.91, nearly matching the ideal CFE and highlighting its superior lightweight performance. These results underline the potential of integrating bio-inspired designs to develop robust, lightweight structures for improved crashworthiness, paving the way for safer and more sustainable transportation solutions.

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来源期刊
Composites Part C Open Access
Composites Part C Open Access Engineering-Mechanical Engineering
CiteScore
8.60
自引率
2.40%
发文量
96
审稿时长
55 days
期刊最新文献
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