Passive load alleviation bi-stable morphing concept
Passive load alleviation bi-stable morphing concept
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DOI：
10.1063/1.4739412
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发表时间：
2012-09-01
期刊：
影响因子：
1.6
通讯作者：
Hagedorn, P.
中科院分区：
文献类型：
--
作者：
Arrieta, A. F.;Bilgen, O.;Hagedorn, P.
在风力涡轮机中，由导致疲劳失效的流体结构相互作用引起的大载荷以及增加的承受叶片根部上的高弯曲应力的鲁棒性构成了重要的设计瓶颈。变形的实现为风力涡轮机叶片中的这些挑战提供了潜在的解决方案。在这封信中，一个被动的负载减轻双稳态变形的概念。设计了一个双稳态试件，在每个稳定状态下具有不同的刚度和动态响应特性，作为一个顺应性结构。被动缓解机制不需要主动部件来实现载荷缓解目标，从而与主动变形解决方案相比，导致更轻和更简单的设计。版权所有2012作者。本文是在知识共享署名3.0未移植许可证下发布的。[http：//dx.doi.org/10.1063/1.4739412]
In wind turbines, large loads caused by fluid structure interaction leading to fatigue failure and added robustness to withstand high bending stresses on the root of blades constitute important design bottlenecks. Implementation of morphing offers a potential solution for such challenges in wind turbine blades. In this letter, a passive load alleviating bi-stable morphing concept is proposed. A bi-stable specimen designed to have different stiffness and dynamic response characteristics on each stable state is devised as a compliant structure. Passive alleviation mechanisms require no active components to achieve the load alleviation objective, resulting in lighter and simpler designs in comparison to actively morphed solutions. Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4739412]