Results 91 to 100 of about 195,542 (316)

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

open access: yesAdvanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky   +3 more
wiley   +1 more source

Optimization Design of Metro Vehicle Air Compressor Frame Structure Based on Adaptive Response Surface Method

open access: yesChengshi guidao jiaotong yanjiu
Objective A finite element model of metro vehicle air compressor frame is established and verified through modal testing and vibration testing. It is found that the vertical bending modal frequency of the dryer frame coincides with motor harmonic ...
ZHOU Jinke, GONG Dao, LIU Guangyu
doaj   +1 more source

Vibration characteristics of 1/8-scale dynamic models of the space-shuttle solid-rocket boosters [PDF]

open access: yes
Vibration tests and analyses of six 1/8 scale models of the space shuttle solid rocket boosters are reported. Natural vibration frequencies and mode shapes were obtained for these aluminum shell models having internal solid fuel configurations ...
Barret, J. R.   +4 more
core   +1 more source

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan   +8 more
wiley   +1 more source

CONSTRUCTION OF TORSIONAL VIBRATION MECHANICS MODEL OF SCRAPER CONVEYOR AND ANALYSIS OF WORKING CONDITIONS THROUGH BENDING SECTION

open access: yesJixie qiangdu, 2022
This article is a study on the physical properties of the scraper under torsion. At first, the process of the scraper conveyor passing through the curved section of the conveyor is analyzed, and then on this basis, the bending moment and the additional ...
MAO Jun   +4 more
doaj  

F-15 flight flutter test program [PDF]

open access: yes
The modes to be observed during the F-15 flight flutter test program were selected on the basis of the results of analytical studies, wind tunnel tests, and ground vibration tests.
Foppe, G. F., Grossman, D. T., Katz, H.
core   +1 more source

Full dimensional (15D) quantum-dynamical simulation of the protonated water-dimer II: infrared spectrum and vibrational dynamics

open access: yes, 2007
The infrared absorption spectrum of the protonated water dimer (H5O2+) is simulated in full dimensionality (15D) in the spectral range 0-4000 cm-1. The calculations are performed using the Multiconfiguration Time-Dependent Hartree (MCTDH) method for ...
Gatti, Fabien   +2 more
core   +3 more sources

A nonlocal sinusoidal plate model for micro/nanoscale plates [PDF]

open access: yes, 2014
A nonlocal sinusoidal plate model for micro/nanoscale plates is developed based on Eringen’s nonlocal elasticity theory and sinusoidal shear deformation plate theory.
Lee, Jaehong   +3 more
core   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou   +3 more
wiley   +1 more source

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