Results 121 to 130 of about 175,888 (305)

Vibration analysis of mistuned damped blades with nonlinear friction and contact

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
In general, only in tangential direction, friction motion between blade dampers is concerned for vibration analysis of mistuned bladed disk. However, in practical, excitation acting on blades inevitably causes normal movement at friction interface due to
Wei Zhao, Di Zhang, Yonghui Xie
doaj   +1 more source

Machine Learning–Assisted Bio‐Interfacial Engineering Resolves Structural–Functional Conflicts in Nanocomposites

open access: yesAdvanced Materials, EarlyView.
A machine learning‐guided bio‐interfacial design strategy resolves the long‐standing strength–toughness–functionality trade‐off in nanocomposites. By efficiently mapping high‐performance regions in the composition–processing space, the approach delivers hierarchically entangled, nanosheet‐pinned architectures that combine mechanical robustness ...
Hao Wang   +10 more
wiley   +1 more source

A method for regulating strong nonlinear vibration energy of the flexible arm

open access: yesAdvances in Mechanical Engineering, 2015
For an oscillating system, large amplitude indicates strong vibration energy. In this article, modal interaction is used as a useful means to regulate strong nonlinear vibration energy of the flexible arm undergoing rigid motion.
Yushu Bian   +4 more
doaj   +1 more source

Coupled multi-disciplinary simulation of composite engine structures in propulsion environment [PDF]

open access: yes
A computational simulation procedure is described for the coupled response of multi-layered multi-material composite engine structural components which are subjected to simultaneous multi-disciplinary thermal, structural, vibration, and acoustic loadings
Chamis, Christos C.   +1 more
core   +1 more source

Ubiquitous Antiparallel Domains in 2D Hexagonal Boron Nitride Uncovered by Interferometric Nonlinear Optical Imaging

open access: yesAdvanced Materials, EarlyView.
Interferometric second‐harmonic generation (SHG) imaging reveals the ubiquitous formation of antiparallel domains in CVD‐grown 2D hexagonal boron nitride. By resolving lattice orientation and SHG phase, hidden domain structures and disorder become visible over large areas. The SHG intensity quantitatively tracks crystalline quality across growth routes,
Yeri Lee   +12 more
wiley   +1 more source

Nonlinear dynamical behaviors of a moving membrane under external excitation

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2018
In this paper, the nonlinear vibration characteristics of a moving printing membrane under external excitation are studied. Based on the Von Karman nonlinear plate theory, the nonlinear vibration equation of the axial motion membrane under the external ...
Mingyue Shao   +3 more
doaj   +1 more source

Coupling between plate vibration and acoustic radiation [PDF]

open access: yes
A detailed numerical investigation of the coupling between the vibration of a flexible plate and the acoustic radiation is performed. The nonlinear Euler equations are used to describe the acoustic fluid while the nonlinear plate equation is used to ...
Bayliss, Alvin   +2 more
core   +1 more source

Freeform Manufacturing of Plant‐Based Structural Colors for Scalable Photonic and Mechanochromic Devices

open access: yesAdvanced Materials, EarlyView.
A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song   +14 more
wiley   +1 more source

Robust Optimal Design of a Nonlinear Dynamic Vibration Absorber Combining Sensitivity Analysis

open access: yesShock and Vibration, 2010
Dynamic vibration absorbers are discrete devices developed in the beginning of the last century used to attenuate the vibrations of different engineering structures.
R.A. Borges   +2 more
doaj   +1 more source

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