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Study of Magnetorheological Fluids towards Smart Energy Absorption of Composite Structures for Crashworthiness

机译:磁流变流体对复合结构耐碰撞性智能吸收的研究

摘要

A study of magnetorheological (MR) fluids energy absorption capability towardsdevelopment of composite retrofit technologies for aged helicopters is presented inthis paper. Design parameters that influence the performance of MR dampers wereidentified and evaluated based on the damping force as a measure of compatibilityto energy absorption. Tensile, compression and cyclic loading tests were alsoconducted experimentally to validate the numerical investigation. An extensiveparametric study conveyed that the piston head radius plays a major role inachieving higher damping force. The fundamental behaviours and results of thedamping force in the numerical studies were also in a good agreement with theexperimental results. The novel parametric numerical analysis framework validatedin this paper will allow for efficient design and optimisation of future dampers.
机译:本文研究了磁流变(MR)流体的能量吸收能力,以开发适用于老化直升机的复合改装技术。基于阻尼力,确定并评估了影响MR阻尼器性能的设计参数,以此作为对能量吸收兼容性的量度。还进行了拉伸,压缩和循环载荷试验,以验证数值研究。广泛的参数研究表明,活塞头半径在获得更大的阻尼力方面起着主要作用。数值研究中阻尼力的基本行为和结果也与实验结果吻合良好。本文验证的新型参数化数值分析框架将允许对未来的风门进行有效的设计和优化。

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