Results 111 to 120 of about 408,399 (309)

Dynamic Direct Stiffness Method

open access: yes, 2021
The procedure presented in Chap. 8 for the determination of free vibration characteristics of the structural member, by considering it as a system having distributed mass, requires the evaluation of constants which are dependent on the boundary conditions.
openaire   +1 more source

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

Lightweight Design Method for Micromanufacturing Systems Based on Multi-Objective Optimization

open access: yesMicromachines
This study proposes a multi-stage collaborative design framework integrating sensitivity analysis, response surface methodology (RSM), and topology optimization for synergistic lightweighting and performance enhancement of micromanufacturing systems ...
Shan Li, Seyed Hamed Hashemi Sohi
doaj   +1 more source

Experimental dynamic stiffness and damping of externally pressurized gas-lubricated journal bearings [PDF]

open access: yes
A rigid vertical shaft was operated with known amounts of unbalance at speeds to 30,000 rpm and gas supply pressure ratios to 4.8. From measured amplitude and phase angle data, dynamic stiffness and damping coefficients of the bearings were determined ...
Cunningham, R. E.   +2 more
core   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz   +3 more
wiley   +1 more source

Research on Dynamic Performance of Yaw Damper

open access: yes机车电传动, 2017
Yaw damper would manifest complex dynamic performance when vehicles run. Different dynamic performance would happen between new yaw damper and old yaw damper. Different installation length would show various dynamic feature.
XU Tengyang   +4 more
doaj  

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

open access: yesAdvanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi   +5 more
wiley   +1 more source

Dynamic impedances of bridge abutments [PDF]

open access: yes, 1992
The soil-structure interaction at bridge abutments may introduce important changes in the dynamic properties of short to medium span bridges. The paper presents the results obtained, through the use of the Boundary Element Method (B.E.M.) technique in ...
Alarcón Álvarez, Enrique   +2 more
core   +1 more source

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