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Predicting Power-Transformer Bushings’ Seismic Vulnerability: Mounting Stiffness And Coupling, Jon Bender, Arvin Farid
Predicting Power-Transformer Bushings’ Seismic Vulnerability: Mounting Stiffness And Coupling, Jon Bender, Arvin Farid
Civil Engineering Faculty Publications and Presentations
Large power transformers are both expensive and vulnerable to seismic failure. Excessive amplification of earthquake loading to power transformer bushings beyond the bushings’ rated strength can occur if the system’s structural dynamics produce unpredictable and unfavorable resonance behavior. Determining the degree of vulnerability to large seismic amplifications is not straight-forward, and general design recommendations do not always resolve problems that can potentially arise. This paper considers a number of Case studies in an attempt to postulate a set of critical factors, which might facilitate better prediction of bushing amplification. Further, several additional Case studies are summarized in order to add …
Effects Of Coupling In Understanding The Surface Energy Balance In The Snake River Basin, Idaho, Thilinl Jaksa, Kevin Nuss, Venkataramana Sridhar
Effects Of Coupling In Understanding The Surface Energy Balance In The Snake River Basin, Idaho, Thilinl Jaksa, Kevin Nuss, Venkataramana Sridhar
Civil Engineering Faculty Publications and Presentations
An accurate estimation of surface fluxes and evapotranspiration is critical in understanding the hydrological and meteorological processes linking the land and the atmosphere. Due to difficulties in obtaining extensive and timely field measurements, land surface and atmospheric models are widely employed in estimating such fluxes. This study focuses on testing the ability of Noah LSM to simulate the surface fluxes both in an uncoupled mode and coupled within an atmospheric model. An agricultural area in the Snake River Basin in Idaho and its surrounding natural vegetation regions are the study area. Two model improvements are tested in this investigation: modification …