Using instability to reconfigure smart structures in a spring-mass model
Using instability to reconfigure smart structures in a spring-mass model
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DOI：
10.1016/j.ymssp.2016.11.029
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发表时间：
2017-07
影响因子：
8.4
通讯作者：
Jiaying Zhang;C. McInnes
中科院分区：
文献类型：
--
作者：
Jiaying Zhang;C. McInnes
多稳态现象在机构设计中应用已久。在本文中，将使用智能结构模型的不稳定配置子集来开发节能方案来重新配置结构。这种重构的新概念利用异斜连接在不同的不稳定等能态之间转换结构。在一个理想的结构模型中，与跨越势垒的稳定平衡之间的转换相比，重构需要零净能量输入。首先利用一个简单的智能结构模型，利用动力系统理论识别等能不稳定组态。然后加上耗散，使其更能代表实际结构。然后使用一系列策略来重新配置智能结构，使用异斜连接和不同的方法来处理耗散。
Multistable phenomenon have long been used in mechanism design. In this paper a subset of unstable configurations of a smart structure model will be used to develop energy-efficient schemes to reconfigure the structure. This new concept for reconfiguration uses heteroclinic connections to transition the structure between different unstable equal-energy states. In an ideal structure model zero net energy input is required for the reconfiguration, compared to transitions between stable equilibria across a potential barrier. A simple smart structure model is firstly used to identify sets of equal-energy unstable configurations using dynamical systems theory. Dissipation is then added to be more representative of a practical structure. A range of strategies are then used to reconfigure the smart structure using heteroclinic connections with different approaches to handle dissipation.