Rigid Material on Top of a Compliant Flooring Effectively Reduces the Impact Force In The Event of a Forward Fall
Rigid Material on Top of a Compliant Flooring Effectively Reduces the Impact Force In The Event of a Forward Fall
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合规地板顶部的刚性材料可有效减少向前跌落时的冲击力
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
S. Okamoto
中科院分区：
文献类型：
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作者：
N. Rajaei;Saeed Abdolshah;Yasuhiro Akiyama;Yoji Yamada;S. Okamoto
生物力学的研究已经提出了几个前跌倒制动策略，以减少在人机协作环境中的冲击力。一个建议的策略是使用一个环境的顺应性地板，因为它可以减少地面的刚度。在这项研究中，我们提出，如果一个刚性层安装在一个兼容的地板（双层地板），冲击力进一步降低。为了探讨这一目标，我们设计了两个主观实验室实验。在实验1中，受试者被指示落在地面上，覆盖着一层柔性材料（泡沫垫）。在实验2中，当一个刚性层（木材表面）安装在柔性层上时，受试者落在双层地板上。测量了两个短的向前跌落高度到伸出的手上的冲击力。结果表明，冲击力的分布由两个峰值组成。第一个峰值具有较高的幅度，并且其之后是具有较低幅度的第二个峰值。比较两个实验之间的第一峰值的大小显示实验2中的冲击力减小。相比之下，两个实验的第二峰的幅度相同。因此，我们得出结论，使用双层地板i.e.one刚性层和一个柔性层可以是一个有效的策略，大大减少冲击力，并防止手腕骨折在向前跌倒。
The biomechanical studies have proposed several forward fall arresting strategies to reduce the impact forces in a human-robot collaboration environment. A proposed strategy is using a compliant flooring for an environment because it can reduce the stiffness of the ground. In this study, we proposed that if a rigid layer is mounted on a compliant flooring (double-layer flooring), the impact force is further reduced. In order to investigate this goal, we designed two subjective laboratory experiments. In experiment 1, the subjects were instructed falling to the ground where was covered by a single layer of compliant material (a foam pad). In experiment 2, the subjects fell on double-layer flooring when one rigid layer (a wood surface) was mounted on the compliant layer. The impact forces were measured for two short forward fall heights onto the outstretched hand. The results showed that the profile of the impact forces consists of two peaks. The first peak has a higher magnitude, and it is followed by the second peak with a lower magnitude. Comparing the magnitude of the first peak between two experiments shows a reduction of the impact force in experiment 2. In contrast, the magnitudes of second peaks are identical for both experiments. Therefore, we concluded that using a double-layer flooring, i.e.one rigid layer and one compliant layer can be an effective strategy for considerably reducing the impact force, and preventing the wrist fractures during the forward fall.
影响因子：
2.4
作者：
Chang WR;Leclercq S;Lockhart TE;Haslam R
通讯作者：
Haslam R