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RISStiffness Design of 3‐D Shear Buildings for Specified Seismic Drifts
Publisher: American Society of Civil Engineers
Abstract: The closed‐form solution is derived to the problem of stiffness design of coaxially coeccentric asymmetric shear buildings (CCS buildings) for specified fundamental natural frequency and eigenvector. The complete quadratic ...
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Publisher: American Society of Civil Engineers
Scale Selection of Baroclinic Instability—Effects of Stratification and Nongeostrophy
Publisher: American Meteorological Society
Abstract: A simple two-dimensional linear stability analysis is presented to study the characteristics of the scale selection and structure of baroclinic cyclogenesis. Effects of a realistic vertical thermal structure of the environment ...
Effects of Lubricant Oil Film Thickness on Seizure Initiation in Cold Extrusion of Aluminium
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A critical condition for seizure initiation has been investigated under a relatively low extrusion speed using an extrusion-type friction testing machine. To examine the effects of lubricant oil ...
An Illustrative Model of Instabilities in Meridionally and Vertically Sheared Flows
Publisher: American Meteorological Society
Abstract: An analytic model is formulated to study the characteristics of shear instabilities in meridionally and vertically sheared flows. The model is based on the quasigeostrophic equations in two layers. The layers are divided ...
Momentum Flux, Flow Symmetry, and the Nonlinear Barotropic Governor
Publisher: American Meteorological Society
Abstract: A number of idealized life-cycle simulations of baroclinically unstable waves are systematically analyzed to study the effects of eddy momentum flux and of zonal mean horizontal shear on the finite-amplitude evolution of ...
Horizontal Divergence Associated with Zonally Isolated Jet Streams
Publisher: American Meteorological Society
Abstract: Horizontal divergence in the upper troposphere associated with zonally isolated jet streams in the climatological-mean fold for the Northern Hemisphere winter is examined by using the wind fields obtained from the NMC ...
Modified Lagrangian-Mean Diagnostics of the Stratospheric Polar Vortices. Part I. Formulation and Analysis of GFDL SKYHI GCM
Publisher: American Meteorological Society
Abstract: An exact, two-dimensional (height?latitude type) diagnostic model of tracer transport in the stratosphere is formulated. The model is a generalization of the area analysis method devised by Butchart and Remsberg but uses ...
Nonlinear Equilibration of Two-Dimensional Eady Waves: Simulations with Viscous Geostrophic Momentum Equations
Publisher: American Meteorological Society
Abstract: Equilibration of two-dimensional Eady waves is numerically investigated using the geostrophic momentum equations incorporating heat and momentum diffusion. Extended solutions are obtained beyond what would be the collapse ...
Three-Dimensional Stress Fields of Elastic Interface Cracks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Various aspects of stress fields near an interface crack in three-dimensional bimaterial plates are investigated. Due to the nature of the resulting deformation field, three-dimensional effects ...