Polymers, Год журнала: 2024, Номер 16(22), С. 3192 - 3192

Опубликована: Ноя. 17, 2024

Self-oscillation is the phenomenon in which a system generates spontaneous, consistent periodic motion response to steady external stimulus, making it highly suitable for applications soft robotics, motors, and mechatronic devices. In this paper, we present self-oscillator based on liquid crystal elastomer (LCE) fiber under constant voltage. The primarily consists of an LCE-liquid metal (LCE-LM) composite fiber, mass sphere, straight rod featuring both conductive insulating segments. Building upon established dynamic LCE model, derive governing equations. Numerical calculations reveal two distinct regimes: static regime self-oscillation regime. Furthermore, provide temporal behavior curves electrothermal-induced contraction tensile force, phase trajectories variation equivalent driving force damping force. These detailed studies elucidate that results from electrothermal-responsive LCE-LM when circuit activated, with continuous being sustained through interplay between sphere self-controlled circuit. We also investigate threshold conditions necessary initiating self-oscillation, as well key parameters influence its frequency amplitude. Our demonstrates improved stability by reducing effects gravity other disturbances. Additionally, curved trajectory can be achieved replacing one, resulting more flexible easily controllable structure. Given these characteristics, may ideal creating monitoring warning devices, systems, integrating actuators controllers.

Язык: Английский