Effect of Flexible Back on Energy Absorption during Landing in Cats: A Biomechanical Investigation
作者: Zhiqiang ZhangJialing YangHui Yu
作者单位: 1Institute of Solid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100191, P. R. China
刊名: Journal of Bionic Engineering, 2014, Vol.11 (4), pp.506-516
来源数据库: Elsevier Journal
DOI: 10.1016/S1672-6529(14)60063-9
关键词: catbiomechanicslandingflexible backenergy absorption
原始语种摘要: Abstract(#br)Cats are characterized by their excellent landing ability. During the landing, they extend and bend their flexible backs. This study was undertaken to examine the effect of flexible back on impact attenuation. We collected kinematic and ground reaction force data from cats performing self-initiated jump down at different heights. Based on these measurements, the mechanical energy and elastic back energy were calculated. Further, we derived a beam model to predict back stiffness from the morphology of the vertebral spines. We found that cat could actively modulate the bending level of flexible back and the landing angle at different heights, making some kinetic energy be stored briefly as elastic strain energy in the back. This mechanism allows cat to reduce the kinetic energy...
全文获取路径: Elsevier  (合作)
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影响因子:1.144 (2012)

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