Global ETD Search
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Showing 1 to 4 of 4 for “"Flexible Diaphragm"”.
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Forced Vibration Testing and Analysis of Pre- and Post- Retrofit Buildings
… Forced vibration testing (FVT) of two stiff-wall/flexible-diaphragm buildings yielded natural frequencies and mode shapes for the two buildings. The buildings were nearly identical with the exception that one had been retrofitted. Both buildings were comprised of concrete shearwalls and steel …
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Design Theory for Channel-less, Low-Pressure, Pressure-Compensating Drip Emitters
… The design theory hypothesizes that as the flexible diaphragm deflects and begins to cover the offset outlet, the gap that flow is able to exit through decreases producing a hydraulic resistance that allows for a constant flow rate. To define this moment of activation, an analytical …
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Modeling and designing the future of drip irrigation : a validated parametric analysis used to design low power, pressure compensating drip emitters
… a common PC emitter architecture, which uses a flexible diaphragm to limit flow. The model was validated by testing nine prototypes with geometric variations, all of which matched predicted performance to within R2 = 0.85. This parametric model was then coupled with a genetic algorithm to …
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Experimental Determination of the Stiffness and Strength of Continuity Tie Connections in Large Wood Roof Dipahragms, and Impact on the Collective Chord Model
… determine whether continuity ties in large wood diaphragms are stiff enough to engage and provide diaphragm flexural stiffness in a collective chord model. Four series of continuity tie assemblies using Simpson Strong-Tie steel connectors were tested to determine the stiffness of each assembly. …