Communications in Nonlinear Science and Numerical Simulation, Год журнала: 2025, Номер unknown, С. 108802 - 108802
Опубликована: Март 1, 2025
Язык: Английский
International Journal of Mechanical Sciences, Год журнала: 2025, Номер 288, С. 110046 - 110046
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
2
Polymers, Год журнала: 2025, Номер 17(4), С. 436 - 436
Опубликована: Фев. 7, 2025
Self-excited systems rely on stable external stimuli to initiate and sustain oscillations via internal processes. However, these can compromise system stability increase friction, limiting their practical applications. To overcome this issue, we propose the light-fueled self-rolling of a liquid crystal elastomer (LCE)-based wheel. A photothermal response model based an LCE was used analyze temperature distribution within rods. The driving torque for is generated by contraction resulting from LCE's response, which displaces wheel's center mass. We then derived equilibrium equations identified critical conditions achieving motion. Through interaction between field torque, wheel achieves continuous absorbing thermal energy counteract damping dissipation. Numerical simulations revealed that velocity influenced several key parameters, including heat flux, coefficient, gravitational acceleration, initial rolling coefficient. proposed LCE-based enhances significantly reduces frictional losses. These characteristics make it promising candidate applications in autonomous drive systems, micro-transportation devices, conversion technologies.
Язык: Английский
Процитировано
0
Structures, Год журнала: 2025, Номер 74, С. 108461 - 108461
Опубликована: Фев. 25, 2025
Язык: Английский
Процитировано
0
Polymers, Год журнала: 2025, Номер 17(5), С. 617 - 617
Опубликована: Фев. 25, 2025
The reliance of feedback mechanisms in conventional light-fueled self-oscillating systems on spatially distributed light and intricately designed structures impedes their application development micro-robots, miniature actuators, other small-scale devices. This paper presents a straightforward rheostat mechanism to create an electrically driven liquid crystal elastomer (LCE) self-oscillator which comprises LCE fiber, rheostat, spring, mass. Based the electrothermally responsive model, we first derive governing equation for system's dynamics subsequently formulate asymptotic equation. Numerical calculations reveal two motion phases, i.e., static self-oscillating, elucidate behind self-oscillation. By employing multi-scale method, identify Hopf bifurcation establish analytical solutions amplitude frequency. influence various system parameters frequency self-oscillation was analyzed, with numerical being validated against results ensure consistency. proposed can be extended cases rheostats that have more general resistance properties offers advantages such as simple design, adjustable dimensions, rapid operation. findings are expected inspire broader design concepts applications soft robotics, sensors, adaptive structures.
Язык: Английский
Процитировано
0
Chaos Solitons & Fractals, Год журнала: 2025, Номер 194, С. 116259 - 116259
Опубликована: Март 7, 2025
Язык: Английский
Процитировано
0
Polymers, Год журнала: 2025, Номер 17(6), С. 711 - 711
Опубликована: Март 7, 2025
Conventional machines often face limitations due to complex controllers and bulky power supplies, which can hinder their reliability operability. In contrast, self-excited movements harness energy from a stable environment for self-regulation. this study, we present novel model of self-rowing boat inspired by paddle boats. This is powered liquid crystal elastomer (LCE) turntable that acts as motor operates under consistent illumination. We investigated the dynamic behavior uniform illumination integrating photothermal reaction theory LCEs with nonlinear framework. The primary equations were solved using fourth-order Runge–Kutta method. Our findings reveal exhibits two modes motion steady illumination: static pattern pattern. transition between these influenced interaction driving friction torques generated energy. study quantitatively analyzes fundamental conditions necessary initiating examines how various dimensionless parameters affect speed system. proposed system offers several unique advantages, including simple structure, easy control, independence electronic components. Furthermore, it has potential miniaturization integration, enhancing its applicability in miniature systems.
Язык: Английский
Процитировано
0
Chaos Solitons & Fractals, Год журнала: 2025, Номер 194, С. 116265 - 116265
Опубликована: Март 6, 2025
Язык: Английский
Процитировано
0
Communications in Nonlinear Science and Numerical Simulation, Год журнала: 2025, Номер unknown, С. 108802 - 108802
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0