Results 61 to 70 of about 22,380 (260)

Ground‐State Charge‐Transfer Doping in Donor–Acceptor Semiconducting Polymers

Advanced Functional Materials, EarlyView.
This work demonstrates controlled ground‐state charge‐transfer complex formation (GS‐CTC) and doping in a series of diketopyrrolopyrrole‐based donor–acceptor semiconducting polymers paired with a π‐conjugated penta‐t‐butylpentacyanopentabenzo[25]annulene “cyanostar” macrocycle. Complementary experimental techniques show how subtle molecular, electronic,
Tanner L. Smith, Akshay N. Shah, Tanya A. Balandin, Michel De Keersmaecker, Paramasivam Mahalingam, Debapriya Gupta, Siqi Yu, Eui Hyun Suh, Pushkar Dalal, Erin L. Ratcliff, Scott P. O. Danielsen, Tse Nga Ng, Amar H. Flood, Jason D. Azoulay   +13 more
wiley   +1 more source

The Numerical Study of the Hydrodynamic Characteristics of Heave Plates with Salient Edges and Spatially Mismatched Arrangements

Journal of Marine Science and Engineering
This study investigates the hydrodynamic characteristics of single-layer heave plates with varying salient edges and triple-layer configurations with size mismatches under forced oscillation, utilizing 3D overset mesh numerical simulations.
Musa Liu, Bo Wang, Jiyun Du
doaj   +1 more source

Damping mechanisms of vibration reduction system with granular materials for vibration system with high natural frequency (Proposal of “relative motion mass”, “rotating mass”, and their consideration)

Nihon Kikai Gakkai ronbunshu, 2017
We investigated the damping mechanism of a granular material damping system applied to reducing vibration in structures that have a high natural frequency and small vibration displacement. Experiments were conducted under several conditions of total mass
Tomoko KOGA, Taichi SATO, Ryuta MATSUNO, Rei KAGEYAMA   +3 more
doaj   +1 more source

Accelerated Discovery of Topological Spin Phase Diagrams in CrSBr Magnets Via High‐Throughput Optimization

Advanced Functional Materials, EarlyView.
Here, we develop a high‐throughput algorithm that accelerates the elucidation of phase diagrams of topological spin textures using limited computational resources at high numerical accuracy. Applying this framework to the van der Waals magnet CrSBr, we unveiled a hierarchy of previously unknown topological textures (domain‐wall bimerons, bimeron chains,
Andrew Lyall, Mohammad H. Badarneh, Cristian Bonato, Rebecca Cheung, Elton J. G. Santos   +4 more
wiley   +1 more source

齿轮传动的阻尼减振技术研究

Jixie chuandong, 2011
The effect of various forms of damping on the vibration of gear body is studied.Firstly,the periodic meshing force of gear drive is obtained by the FEA software ANSYS.Secondly,the gear model is simplified,the meshing force is added to the gear body and ...
钟延涛, 王黎钦, 李文良, 张传伟   +3 more
doaj  

Achieving High Damping Capacity in Oxygen‐Enhanced BCC Zr‐Hf‐Ti‐Nb Multi‐Principal‐Element Alloys with Low Young's Modulus

Advanced Science
Multi‐principal‐element alloys (MPEAs) have gained widespread popularity due to the efficient synergetic regulation of mechanical and functional properties in a huge compositional space.
Qing Wang, Zhenhua Wang, Qixiang Zhang, Rui Wang, Tongmin Wang, Chaoli Ma, Ang Li, Xiaodong Han, Junhua Luan, Zengbao Jiao, Peter K. Liaw   +10 more
doaj   +1 more source

Novel superconducting rf structure for ampere-class beam current for multi-GeV energy recovery linacs

Physical Review Special Topics. Accelerators and Beams, 2010
Future ampere-class energy recovery linacs (ERLs) based on superconducting technology demand efficient damping of the higher-order modes in the superconducting radio-frequency (SRF) accelerating structures to achieve stable beam operation in multipass ...
Z. Liu, A. Nassiri
doaj   +1 more source

Mitigation of Subsynchronous Resonance in Series-Compensated DFIG Wind Farm Using Active Disturbance Rejection Control

IEEE Access, 2019
This paper presents an active disturbance rejection control (ADRC) method to mitigate subsynchronous resonance (SSR) in a doubly-fed induction generator (DFIG)-based wind farm connected to series compensated transmission lines.
Yanhui Xu, Shimeng Zhao
doaj   +1 more source

Determination of dynamic characteristics of piston-hole-type and bypass-pipe-type oil dampers using computational fluid dynamics

Mechanical Engineering Journal, 2020
Oil dampers are indispensable devices for vibration suppression, but their nonlinear behavior makes it difficult to theoretically determine their damping characteristics.
Itsuro HONDA, Toshihiko ASAMI, Hidetaka SHIOZAKI   +2 more
doaj   +1 more source

Mechanics of Telson Ridges in Mantis Shrimp for Impact Analysis and Implications for Bioinspired Elastic Shell Designs

Advanced Functional Materials, EarlyView.
The mantis shrimp telson reveals how ridged biological shields control deformation under impact. Inspired by this architecture, telson‐inspired ridged curved shells transform ridge geometry and macroscopic curvature into bidirectional snap‐through, tunable stiffness, and enhanced hysteretic energy dissipation for multifunctional architected materials ...
Phani Saketh Dasika, Adwait Trikanad, Wei Huang, Taige Hao, David Kisailus, Pablo D. Zavattieri   +5 more
wiley   +1 more source