The dynamic elastic response to impulse synchronisation of composite prosthetic energy storing and returning feet
The dynamic elastic response to impulse synchronisation of composite prosthetic energy storing and returning feet
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DOI：
10.1177/1754337113501491
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发表时间：
2014-03-01
影响因子：
1.5
通讯作者：
Ong, Zhi C.
中科院分区：
文献类型：
--
作者：
Noroozi, Siamak;Rahman, Abdul G. A.;Ong, Zhi C.
在这项研究中，它被证明，输入脉冲（人力）和地面反应脉冲/冲击之间的完美同步可以导致一种现象，称为动态弹性响应脉冲同步与有利的后果的行为的能量存储和返回的脚。1988年残奥会的精英比赛中首次使用了一种能量储存和返回的复合材料假肢。自推出以来，假肢已被证明是一个争议的来源。2008年，得出的结论是，与身体健全的运动员相比，在跑步时使用这种技术的运动员处于有利地位。然而，这些研究结果一直存在争议。关于截肢运动员的能量储存和返回的脚在表现中的贡献水平，仍然存在未回答的问题。以前已经进行了一系列的调查，以研究一些能量存储和返回复合材料假脚的动态特性。已经发现，如果可以施加频率接近于能量存储和返回支脚的固有频率之一的正弦输入脉冲，则可以使能量存储和返回支脚易于共振，在弯曲模式的情况下，如果持续，则可以导致高度的增加或速度的增加。
In this research, it is proven that perfect synchronisation between the input impulse (human effort) and the ground reaction impulse/impact can result in a phenomenon called the dynamic elastic response to impulse synchronisation with favourable consequences to the behaviour of the energy storing and returning foot. An energy storing and returning composite prosthetic foot was first used in elite competition at the 1988 Paralympic Games. Since its introduction, the prostheses have proven to be a source of controversy. In 2008, it was concluded that the athletes who use such technology when running are in an advantageous position when compared to able-bodied athletes. However, these findings have since been disputed. There still remain unanswered questions regarding the level of contribution of energy storing and returning feet in the performance of amputee athletes. A series of investigations have previously been conducted to study the dynamic characteristics of a number of energy storing and returning composite prosthetic feet. It was found that if a sinusoidal input impulse, with a frequency close to one of the energy storing and returning feet's natural frequencies, could be applied, it can make the energy storing and returning foot susceptible to resonance, which, in the case of bending mode, if sustained can lead to a gain in height or increased velocity.