Hysteresis in cavitation emissions during a ramped-then-deramped amplitude sonication: A theoretical and experimental investigation [0.03%]
一种理论和实验结合的方法研究在幅度扫过型超声空化中的回滞效应
Yikai Zhang,Shida Li,Paul Prentice et al.
Yikai Zhang et al.
Dynamic hysteresis in cavitation emissions is investigated experimentally and numerically using a continuous ramped-then-deramped acoustic excitation. Hydrophone spectrograms reveal clear asymmetries between the ramped and deramped phases a...
Fluid-structure dynamics of a vibro-impact capsule robot in multiphase intestinal environments [0.03%]
多重介质环境下振动胶囊机器人的流固耦合动力学研究
Zepeng Wang,Jiyuan Tian,Yang Liu et al.
Zepeng Wang et al.
The gastrointestinal tract contains complex fluids, such as mucus, chyme, and water, that can significantly influence capsule robot locomotion by reducing friction or introducing hydrodynamic drag. This study presents a bidirectional fluid-...
Computation of simple invariant solutions in fluid turbulence with the aid of deep learning [0.03%]
借助深度学习计算流体湍流的简单不变解
Jacob Page
Jacob Page
The dynamical systems view of a turbulent fluid flow provides a tantalizing connection between the self-sustaining nonlinear mechanics of turbulence and its more well-known statistical properties, and promises to open up new avenues in our ...
Swimming dynamics of screw-shaped untethered magnetic robots in confined spaces [0.03%]
螺旋状无绳磁力机器人在狭小空间内的游泳动力学性能研究
Luuc de Jongh,Anke Klingner,Leendert-Jan W Ligtenberg et al.
Luuc de Jongh et al.
In confined environments, the propulsion speed of torque-driven helical untethered magnetic robots (UMRs) depends on vessel diameter and helical pitch. This phenomenon likely affects the swimming speed of these robots when navigating in viv...
Bifurcation-based dynamics and internal resonance in micro ring resonators for MEMS applications [0.03%]
微环谐振器的分岔动力学及内部共振在MEMS中的应用
Saber Azizi,Hamed Haddad Khodaparast,Hadi Madinei et al.
Saber Azizi et al.
This paper presents a novel investigation into the dynamics of a micro ring structure subjected to harmonic base excitation, designed as a highly sensitive MEMS mass sensor or bifurcation-based switch. Leveraging the in-plane nature of the ...
Optimal control under safety constraints and disturbances: a multi-step, off-policy adaptive dynamic programming approach [0.03%]
基于安全约束和扰动的最优控制：多步时策略无关自适应动态规划方法
Jun Ye,Xiaowei Zhao,Yougang Bian et al.
Jun Ye et al.
This paper introduces a multi-step, off-policy adaptive dynamic programming approach, in both model-free and model-based variants, intending to solve optimal control problems under disturbances and safety constraints. To provide a more accu...
Elise Özalp,Luca Magri
Elise Özalp
Partial differential equations, and their chaotic solutions, are pervasive in the modelling of complex systems in engineering, science, and beyond. Data-driven methods can find solutions to partial differential equations with a divide-and-c...
Nonlinear aeroelastic modelling and analysis of a geometrically nonlinear wing with combined unsteady sectional and lifting line aerodynamics [0.03%]
基于非线性翼型气动的机翼大变形非线性气弹分析与数值模拟研究
Sanuja Jayatilake,Mark Lowenberg,Benjamin K S Woods et al.
Sanuja Jayatilake et al.
This research develops a novel geometrically nonlinear aeroelastic model of a cantilevered flexible wing capable of capturing unsteady aerodynamics with finite span effects. The structural model is developed using a Chebyshev-Ritz approach ...
Yao Yan,Joseph Páez Chávez,Jiajia Shen et al.
Yao Yan et al.
Functionalised nonlinear structures employing structural instabilities for rapid response shape-shifting are emerging technologies with a wide range of potential applications. The von Mises truss is a widely employed model for such function...
From deterministic to stochastic: limits of extracting bifurcation diagrams for noisy bistable oscillators with the control-based continuation method [0.03%]
从确定性到随机性：使用基于控制的连续方法提取噪声双稳态振荡器分岔图的极限
Henrik T Sykora,Sandor Beregi
Henrik T Sykora
Noise limits the information that can be experimentally extracted from dynamical systems. In this study, we review the Control-based Continuation (CBC) approach, which is commonly used for experimental characterisation of nonlinear systems ...