Results 131 to 140 of about 4,153 (287)

Modelling and passive correction investigation of vibration induced machining errors on CNC machine tools

open access: yes
Machine tool vibration is a complex subject requiring a multi-disciplinary approach involving the identification and analysis of the vibration sources and characteristics, as well as its direct and indirect effects. Machine tool vibration is influenced
Widiyarto, Muhammad Helmi Nur
core  

Nonlinear modeling and torsional vibration analysis of heavy-duty vehicle powertrain system during acceleration

open access: yesAdvances in Mechanical Engineering
The vehicle acceleration process is often accompanied by torsional vibration of the powertrain system. Poor torsional vibration performance significantly influences the driving comfort of the vehicle and the reliability of powertrain components. Compared
Junlong Qu   +6 more
doaj   +1 more source

Analysis of Torsional Vibration Inherent Characteristics of Gear Shaft

open access: yesDEStech Transactions on Economics, Business and Management, 2018
Shen-bin NIE, Ming-xiang GONG
openaire   +2 more sources

Numerical simulation study on the characteristics and propagation attenuation of vibration signals in freezing pipe fracture

open access: yesDeep Underground Science and Engineering, EarlyView.
This research study employs analysis system (ANSYS) fluid–structure interaction simulations to investigate the generation and attenuation of vibration signals resulting from freezing pipe fractures in artificial ground freezing projects. By evaluating key variables—including frozen soil elastic modulus, brine inlet pressure, and external pipe pressure ...
Yi Cao, Yansen Wang, En Chen, Meng Zhao
wiley   +1 more source

Elementary Steps of Energy Conversion in Strongly Correlated Systems: Beyond Single Quasiparticles and Rigid Bands

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This article reviews the fundamental consequences of strong correlations on excitations and elementary steps of energy conversion leading to new opportunities to control energy conversion. Examples include friction at surfaces, thermal transport, and photovoltaic energy conversion.
Vasily Moshnyaga   +14 more
wiley   +1 more source

基于动态模型纺织机器滚珠丝杆机构振动特性研究

open access: yesJixie chuandong, 2014
To the vibration problem of the ball screw mechanism of textile machine,the dynamic vibration model of ball screw transmission mechanism is established,the preload,the mass of work table,the torsional stiffness,the equivalent axial stiffness and the ...
张长福, 姚玲峰
doaj  

Gold(I) Phosphine/Phosphido‐Borohydride Complexes

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
Synthesis, structure, and electrochemical characteristics of a homologous series of gold(I) complexes featuring phosphine and phosphido–borohydride ligands. A homologous series of linear, mononuclear gold(I) phosphine/phosphido‐borohydride complexes, encompassing [Au(PR3)2]+ 1, [Au(PR3)(PR2BH3)] 2 and [Au(PR2BH3)2]– 3 (R = tBu, Ad), has been prepared ...
Matthew J. G. Sinclair   +3 more
wiley   +1 more source

Analysis and Dynamic Optimization of Torsional Vibration Characteristic of Traction Unit of Shearer

open access: yesJixie chuandong, 2018
In order to obtain the better torsional vibration characteristics of the traction unit of the shearer,taking a new type of shearer traction drive system as the research object,based on its simplified kinetics model,by using the ADAMS software,the ...
Jia Chao, Wang Dawei
doaj  

Redox‐Active Bisphosphines Based on a W(II)‐Propargyl Complex Backbone

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
Three bisphosphine ligands based on tungsten(II) propargyl‐type alkyne complexes were synthesized and characterized. The methanolate derivative was used as a metalla‐ligand for the preparation of a binuclear bisphosphine‐κ2‐PdCl2 complex. In both cases, IR spectroelectrochemistry (IR‐SEC) measurements revealed a successive process following oxidation ...
Friederike M. Hamann   +7 more
wiley   +1 more source

On Oxalyl Halide Isothiocyanates Part II: Decarbonylation and Reactivity Studies

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
Thermal decarbonylation of oxalyl halide isothiocyanates affords the respective carbonyl halide isothiocyanates as liquids. Crystals grown from melt allowed the elucidation of their crystal structures. Spectroscopic signatures (IR, Raman, NMR) are presented alongside reactivity studies. The reaction of oxalyl halide isothiocyanate, X(CO)2NCS (X = Cl (1)
Sven Ringelband, Frank Tambornino
wiley   +1 more source

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