Dimensional analysis of spring-wing systems reveals performance metrics for resonant flapping-wing flight.
Dimensional analysis of spring-wing systems reveals performance metrics for resonant flapping-wing flight.
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弹簧翼系统的量纲分析揭示了共振扑翼飞行的性能指标。
DOI：
10.1098/rsif.2020.0888
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发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Gravish N
中科院分区：
文献类型：
--
作者：
Lynch J;Gau J;Sponberg S;Gravish N
扑翼昆虫，鸟类和机器人被认为是通过使用弹性元件进行能量存储和返回来抵消振动翅膀运动的高功率成本。昆虫在其飞行解剖学中具有高回弹性的弹性区域，这可以实现高动态效率。然而，最近的实验突出了由于昆虫胸腔中的阻尼而导致的损失，这可能会减少这些弹性元件的益处。我们进行了实验，并模拟，动态缩放robophysical扑动模型与弹性元件和生物相关的结构阻尼，以阐明身体力学，空气动力学和驱动弹簧翼能量学的作用。我们测量振荡扑翼动力学和能量的驱动参数，系统惯性和弹簧弹性的范围。为了推广这些结果，我们推导出无量纲弹簧翼运动方程和本变量，描述扑翼系统的共振特性：N，惯性和空气动力学的相对影响的措施，和，减少刚度。我们发现，内部阻尼尺度与N，揭示了动态效率随N的增加而单调下降。基于这些结果，我们介绍了一个通用的框架，了解内部阻尼，空气动力和惯性力的作用，以及弹性结构内的所有弹簧翼系统。
Flapping-wing insects, birds and robots are thought to offset the high power cost of oscillatory wing motion by using elastic elements for energy storage and return. Insects possess highly resilient elastic regions in their flight anatomy that may enable high dynamic efficiency. However, recent experiments highlight losses due to damping in the insect thorax that could reduce the benefit of those elastic elements. We performed experiments on, and simulations of, a dynamically scaled robophysical flapping model with an elastic element and biologically relevant structural damping to elucidate the roles of body mechanics, aerodynamics and actuation in spring-wing energetics. We measured oscillatory flapping-wing dynamics and energetics subject to a range of actuation parameters, system inertia and spring elasticity. To generalize these results, we derive the non-dimensional spring-wing equation of motion and present variables that describe the resonance properties of flapping systems: N, a measure of the relative influence of inertia and aerodynamics, and , the reduced stiffness. We show that internal damping scales with N, revealing that dynamic efficiency monotonically decreases with increasing N. Based on these results, we introduce a general framework for understanding the roles of internal damping, aerodynamic and inertial forces, and elastic structures within all spring-wing systems.
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影响因子：
2.8
作者：
Dudek, DM;Full, RJ
通讯作者：
Full, RJ
影响因子：
2.8
作者：
Lu, Yuan;Shen, Gong Xin;Lai, Guo Jun
通讯作者：
Lai, Guo Jun
影响因子：
3.4
作者：
Jankauski, Mark A.
通讯作者：
Jankauski, Mark A.
DOI：
10.1098/rstb.1984.0052
发表时间：
1984-01-01
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
ELLINGTON, CP
通讯作者：
ELLINGTON, CP
影响因子：
6.4
作者：
Campolo, Domenico;Azhar, Muhammad;Sitti, Metin
通讯作者：
Sitti, Metin