Results 21 to 30 of about 36,236,534 (364)
Snapping for high-speed and high-efficient butterfly stroke–like soft swimmer
Science Advances, 2022 Natural selection has tuned many flying and swimming animals to share the same narrow design space for high power efficiency, e.g., their dimensionless Strouhal numbers St that relate flapping frequency and amplitude and forward speed fall within the ...
Yinding Chi +4 more
semanticscholar +1 more source
Scientific Reports, 2023 In laser materials processing, energy losses due to reflection, heat conduction and thermal radiation play an important role. In this publication, we show that with increasing laser intensity, the energy lost within the sample becomes less important for ...
Stefan Reich +6 more
doaj +1 more source
Scientific Reports, 2021 When laser beams propagate through media with non-vanishing absorption, the media is heated resulting in a change of the refractive index, which can lead to thermal lensing and thermal blooming.
Stefan Reich +4 more
doaj +1 more source
Reinforcement-learning-based parameter adaptation method for particle swarm optimization
Complex & Intelligent Systems, 2023 Particle swarm optimization (PSO) is a well-known optimization algorithm that shows good performances in solving different optimization problems. However, the PSO usually suffers from slow convergence.
Shiyuan Yin +6 more
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Physics-informed neural networks for high-speed flows
Computer Methods in Applied Mechanics and Engineering, 2020 In this work we investigate the possibility of using physics-informed neural networks (PINNs) to approximate the Euler equations that model high-speed aerodynamic flows. In particular, we solve both the forward and inverse problems in one-dimensional and
Zhiping Mao +2 more
semanticscholar +1 more source
Research on Cumulative Deformation Characteristics of Subgrade Filling under Cyclic Train Loading
Shock and Vibration, 2022 The smoothness of high-speed railway is extremely strict. As an important part of the high-speed railway foundation, the subgrade structure has strict deformation requirements.
Junkai Yao +4 more
doaj +1 more source
High Speed and High Dynamic Range Video with an Event Camera [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2019 Event cameras are novel sensors that report brightness changes in the form of a stream of asynchronous “events” instead of intensity frames. They offer significant advantages with respect to conventional cameras: high temporal resolution, high dynamic ...
Henri Rebecq +3 more
semanticscholar +1 more source
High Speed Blanking: An Experimental Method to Measure Induced Cutting Forces [PDF]
, 2013 Lien vers la version éditeur: http://link.springer.com/article/10.1007/s11340-013-9738-1A new blanking process that involves punch speed up to 10 ms −1 has obvious advantages in increased productivity.
LARUE, Arnaud +5 more
core +1 more source
IEEE Access, 2020 As a maglev levitates with a small air gap and runs very fast, securing the levitation system's stability is crucial. Thus, the high-performance decoupling control between the propulsion control system and the levitation system is of critical importance.
Jeong-Min Jo +6 more
doaj +1 more source
Chatter Control by Spindle Speed Variation in High-Speed Milling [PDF]
, 2009 High-speed milling operations are often limited by regenerative vibrations. The aim of this paper is to analyze the effect of spindle speed variation on machine tool chatter in high-speed milling. The stability analysis of triangular and sinusoidal shape
Arnaud, Lionel +3 more
core +1 more source