Dynamic Model Development and Characterization of Gear Bearing Transmission Systems: Theory and Experiments

If promulgated as proposed, effluent guidelines for the U.S. pulp and paper industry will impose average monthly and maximum daily numerical limits of discharged AOX (adsorbable organic halogen). At this time, it is unclear whether the maximum-day variability factor used to establish the proposed effluent guidelines will provide sufficient margin for mills to achieve compliance during periods of normal but variable operating conditions within the pulping and bleaching processes. Consequently, additional information is needed to relate transient AOX loadings with final AOX discharges. This paper presents a simplistic dynamic model of AOX decay during treatment. The model consists of hydraulic characterization of an activated sludge process and a first-order decay coefficient for AOX removal. Data for model development were acquired by frequent collection of influent and effluent samples at a bleach kraft mill during a bleach plant shutdown and startup sequence.

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Dynamic model for long-term expansion planning studies of power transmission systems: the Ortie model

International Journal of Electrical Power & Energy Systems ◽

10.1016/0142-0615(81)90025-9 ◽

1981 ◽

Vol 3 (1) ◽

pp. 2-16 ◽

Cited By ~ 17

Author(s):

J.C. Dodu ◽

A. Merlin

Keyword(s):

Dynamic Model ◽

Power Transmission ◽

Transmission Systems ◽

Expansion Planning ◽

Power Transmission Systems

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Dynamic model development based on experimental investigations of acoustically levitated suspension droplets

International Journal of Heat and Mass Transfer ◽

10.1016/j.ijheatmasstransfer.2021.121057 ◽

2021 ◽

Vol 171 ◽

pp. 121057

Author(s):

Moritz Buchholz ◽

Johannes Haus ◽

Fritz Polt ◽

Swantje Pietsch ◽

Michael Schönherr ◽

...

Keyword(s):

Dynamic Model ◽

Model Development ◽

Experimental Investigations

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Monte Carlo simulation of colloidal membrane filtration: Model development with application to characterization of colloid phase transition

Journal of Membrane Science ◽

10.1016/j.memsci.2005.02.004 ◽

2005 ◽

Vol 255 (1-2) ◽

pp. 291-305 ◽

Cited By ~ 28

Author(s):

J CHEN ◽

M ELIMELECH ◽

A KIM

Keyword(s):

Phase Transition ◽

Monte Carlo Simulation ◽

Monte Carlo ◽

Membrane Filtration ◽

Model Development ◽

Filtration Model

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Damping and Bandgap Characteristics of a Viscoelastic Tensegrity Damper

Journal of Vibration and Acoustics ◽

10.1115/1.4051091 ◽

2021 ◽

pp. 1-47

Author(s):

Mohamed Raafat ◽

Amr Baz

Keyword(s):

Mathematical Model ◽

Material Characterization ◽

Structural Vibrations ◽

New Class ◽

Structural Applications ◽

Theoretical Predictions ◽

Specific Frequency ◽

The Mathematical Model ◽

Theory And Experiments

Abstract A theoretical and experimental investigation of a new class of a tensegrity-based structural damper is presented. The damper is not only capable of attenuating undesirable structural vibrations, as all conventional dampers, but also capable of completely blocking the transmission of vibration over specific frequency bands by virtue of its periodicity. Such dual functionality distinguishes the tensegrity damper over its counterparts of existing structural dampers. Particular emphasis is placed here in presenting the concept and developing the mathematical model of the dynamics of a unit cell the damper. The model is then coupled with a Floquet-Bloch analysis in order to identify the bandgap characteristics of the damper. The predictions of the mathematical model are validated experimentally using a prototype of the damper which is built using 3D printing. A comprehensive material characterization of the damper is performed followed by a detailed extraction of the static and dynamic behavior of the damper in order to validate the theoretical predictions. Close agreement is observed between theory and experiments. The developed theoretical and experimental techniques provide invaluable means for the design of this new class of dampers particularly for critical structural applications.

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