Exploiting the instability of smart structure for reconfiguration
Exploiting the instability of smart structure for reconfiguration
复制标题
利用智能结构的不稳定性进行重构
DOI:
10.1063/1.4986795
复制
发表时间:
2017-08
影响因子:
4
通讯作者:
Jinhao Qiu
中科院分区:
文献类型:
--
作者:
Jiaying Zhang;Chen Zhang;Lin Hao;Rui Nie;Jinhao Qiu
Aiming to verify the concept of using heteroclinic connections to reconfigure smart structures, a multistable buckled beam with integrated Shape Memory Alloy (SMA) wires is utilized as a high fidelity model. The Shape Memory Alloy (SMA) wires are resistively heated to provide the actuation force to stabilize the unstable configuration and the transition of the beam from one unstable equilibrium condition to the other. This concept provides a means of reducing the energy requirement for transitions between configurations of the structure, which is an energy-efficient reconfiguration scheme between equal-energy unstable (but actively controlled) equilibria. This letter presents a detailed design of the system, and how the active (heated) SMA wires control the structure stay in unstable configuration and drive the structure to achieve reconfiguration. Exploiting the instability of the smart structure has significant interests in many power reduction applications, including active flow control, reconfiguration of large deployable aerospace structures, and MEMS devices.
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影响因子:
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通讯作者:
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