Results 101 to 110 of about 5,694 (306)

THE END-GRAPH APPROACH TO SOLVING PROBLEMS OF THE DYNAMICS OF BEAM STRUCTURES

Nauka ta progres transportu, 2008
On the basis of a linear graph theory, a method of initial parameters and associated matrices the universal analytical approach to calculation of free and forced vibrations of rod constructions is offered.
O. S. Raspopov
doaj  

Performance-Based Assessment of Nonlinear Pendulum Impact Dampers for Structural Risk and Resilience

Buildings
Extreme events often provoke critical structural vibrations, compromising building performance and resilience. Particle impact dampers (PIDs) are widely recognized as effective passive vibration control devices; however, their nonlinear dynamics and ...
Muhammad Ayaz Akbar, Hassan Raza, Naveed Husnain   +2 more
doaj   +1 more source

Engineering MnNiPx Cathode via Dual Role of Mn: Simultaneous Enhancement of Activity and Intermittent Operation Durability

Advanced Functional Materials, EarlyView.
Engineering MnNiPx cathodes through the dual role of Mn simultaneously improves hydrogen evolution reaction activity and intermittent‐operation durability. Mn preferentially oxidizes to protect Ni–P sites from irreversible oxidation, while metallic Mn incorporation enhances the HER kinetics of Ni–P active layer.
Ik‐Sun Kim, Jungwoo Choi, Sechan Lee, Jung Eun Park, Changsoo Lee, Jongsu Seo, Ji Hee Kwon, Gisu Doo, Hyeonjung Park, Dongju Lee, Won‐Chul Cho, Changhee Kim, Nosang Vincent Myung, Sang Soo Han, Byeong‐Seon An, MinJoong Kim, Hyun‐Seok Cho   +16 more
wiley   +1 more source

Experimental Introduction to Forced and Self-Excited Vibrations in Milling Processes and Identification of Stability Lobes Diagrams [PDF]

, 2011
In milling operations, cutting edge impacts due to the interaction between the cutter and the workpiece excite vibrations. It is possible to distinguish between free, forced and self-excited vibrations.
Guillem Quintana, Joaquim de Ciurana, I. Ferrer, Daniel Teixidor   +3 more
core   +1 more source

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

Advanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg, Shelly Zlotnikov, Maya Fiorentino, Yuval Elias, Ornit Nagler‐Avramovitz, Hagay Shpaisman   +5 more
wiley   +1 more source

Deformation of Physically Nonlinear Viscoelastic Annular Plates with Loading Internal and External Pressure

Механика машин, механизмов и материалов, 2010
The influence of the magnetic field on free and forced, flexural and shear vibrations of a three-layered composite beam containing interlayer magnetorheological core is studied.
G.I. Mikhasev , E.V. Korobko , Z.A. Novikova   +2 more
doaj  

Oscillators: Phenomenological mappings and analogies: First part: Mathematical analogy and chains [PDF]

Scientific Technical Review, 2015
New analytical and numerical results of dynamics for both linear and nonlinear system with two degrees of freedom are presented. For a mechanical chain system with two degrees of freedom, oscillations are investigated analytically and numerically with ...
Hedrih-Stevanović Katica, Ivanović-Šašić Ana, Simonović Julijana, Kolar-Anić Ljiljana, Čupić Zeljko   +4 more
doaj  

Computer simulation of free and forced vibration ofcompound fuel tanks [PDF]

, 2023
The new analytical method and computer technology are elaborated for numerical simulation of free and forced vibrations of compound fuel tanks in launch vehicles at different stages of mission: at overloads and in microgravity, with considering the ...
Сєрікова, О. М., Choudhary, N., Стрельнікова, О. О.   +2 more
core  

Sustainable Electrochemical Synthesis of High‐Quality MXenes: Mechanistic Insights, Applications, Challenges, and Technological Prospects

Advanced Functional Materials, EarlyView.
Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh, Madhusudhana M Devadiga, Santosh K. Tiwari, AS Dhaliwal, Gurpreet Singh Selopal   +4 more
wiley   +1 more source

Analysis of Vibrational Performance of A Piezoelectric Micropump with Diffuse/Nozzle Microchannel

Nanotechnology and Precision Engineering, 2018
: Piezoelectric transducers of different external diameters are designed and fabricated and incorporated into micropumps. Through finite element analysis, it is shown that the volume efficiency of the micropump reaches its maximum value for the first ...
Yanfang Guan, Xiang Li
doaj   +1 more source