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Dynamic Emission of Dislocations From a Moving Crack
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The emission of dislocations from a propagating crack in the mode II or III situations is studied by computer simulation. While the crack is moving the steady state number of dislocations is ...
Quantitative Model to Forecast Changes in Hurricane Vulnerability of Regional Building Inventory
Publisher: American Society of Civil Engineers
Abstract: This paper introduces a quantitative methodology to model the way the hurricane wind vulnerability of a region’s building inventory changes over time due, for example, to aging, structural upgrading efforts, construction ...
Dynamic Characteristics of Labyrinth Seal and Rotor Stability Considering Swirl Brakes
Publisher: ASCE
Abstract: The numerical solution model of the labyrinth seal considering the multiple frequencies elliptical whirling of the rotor and swirl brake was established by the computational fluid dynamics (CFD) technique. Then, the dynamic ...
Buoyancy Effect of Bristles for a Brush Seal with Disturbance-Suppressing Holes
Publisher: American Society of Civil Engineers
Abstract: Bristles in the first few rows float up from the rotor surface due to the radial airflow in the gap between the front plate and bristle pack, which directly affects seal performance and the service life of a brush seal. ...
Influence Factors of Honeycomb Seal Performance and Stability Analysis of Rotor System
Publisher: ASCE
Abstract: Structural parameters and inlet preswirl have great influences on the static and dynamic characteristics of honeycomb seals. In this paper, a multifrequency elliptical vortex dynamic model of a honeycomb seal was established ...
Numerical and Experimental Investigations on Windage Heating Effect of Labyrinth Seals
Publisher: ASCE
Abstract: The heat load caused by windage heating effect of labyrinth seals seriously influences the sealing of shaft air flow. To reveal the windage heating effect of labyrinth seals to reasonably design an aeroengine rotor, this ...