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RISA Semi-Analytical Solution to the Dynamic Tracking of Non-contacting Gas Face Seals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The gas film stiffness and damping coefficients for a non-contacting gas face seal are obtained from the unsteady nonlinear Reynolds equation using the perturbation method. The seal assembly is ...
Numerical Modeling of Dynamic Sealing Behaviors of Spiral Groove Gas Face Seals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical model is developed for the dynamic analysis of gas lubricated spiral groove face seals. Effects of the rotor runout, misalignment, face contact, as well as the stiffness and damping ...
A Steady-State Thermomechanical Solution of Continuously Quenched Axisymmetric Bodies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A finite element methodology to solve steady-state thermochemical problems is presented in this paper, where axisymmetric geometry is considered, and small strain and small rotation are assumed ...
Estimation of Moment-Independent Importance Measure on Failure Probability and Its Application in Reliability Analysis
Publisher: American Society of Civil Engineers
Abstract: Similar to the definition of the moment-independent importance measure on model failure probability, the authors define the moment-independent importance measure concerning the importance sampling method. After combining ...
Influence of Prestress Fields on the Phonon Thermal Conductivity of GaN Nanostructures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The phonon thermal conductivity of Gallium nitride (GaN) nanofilms and nanowires under prestress fields are investigated theoretically. In the framework of elasticity theory, the phonon dispersion relations of spatially ...
NARR’s Atmospheric Water Cycle Components. Part I: 20-Year Mean and Annual Interactions
Publisher: American Meteorological Society
Abstract: The North American Regional Reanalysis (NARR) atmospheric water cycle is examined from 1980 to 1999 using a budget approach, with a particular emphasis on annual component interactions and the role of hourly precipitation ...
NARR’s Atmospheric Water Cycle Components. Part II: Summertime Mean and Diurnal Interactions
Publisher: American Meteorological Society
Abstract: Summertime interactions in the North American Regional Reanalysis (NARR) atmospheric water cycle are examined from a user?s perspective over the 1980?99 period with a particular emphasis on the diurnal cycle, the nocturnal ...
Absorption Spectra and Electron Vibration Coupling of Ti:Sapphire From First Principles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Firstprinciples calculations are performed to study the absorption spectra and electronvibration coupling of titaniumdoped sapphire (Ti:Al2O3). Geometry optimization shows a local structure relaxation after the doping of ...
Comparison of the Environmental Impacts of Reactive Magnesia and Calcined Dolomite and Their Performance under Different Curing Conditions
Publisher: American Society of Civil Engineers
Abstract: This study compared two binder systems composed of reactive magnesite cement (RMC) and calcined dolomite (D8), which were produced via the calcination of magnesite and dolomite at 8°C, respectively. The environmental impacts ...
Fiber-Distribution Assessment in Steel Fiber–Reinforced UHPC Using Conventional Imaging, X-Ray CT Scan, and Concrete Electrical Conductivity
Publisher: American Society of Civil Engineers
Abstract: Specimens were made of ultrahigh-performance concrete (UHPC) with two ratios of sand to cementitious materials, 0.5 and 1.25. Specimens with 0%, 0.5%, 1%, 1.5%, and 2% fiber content were prepared from each mixture. Fiber ...