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32results about How to "Additional tool" patented technology

Methods of analyzing the vibro-acoustic optimization potential and optimizing the vibro-acoustic behavior of a structure

ActiveUS20080114496A1Reliable and consistent and correct resultSimple structureVibration measurement in fluidTemperatue controlCoupling lossEngineering
The invention relates to a method of analyzing the vibro-acoustic optimization potential of a structure of vibro-acoustically coupled subsystems having internal and coupling loss factors by means of statistical energy analysis (SEA). The invention further relates to a method of optimizing the vibro-acoustic behavior of such a structure. The inventive methods involve the steps of:
    • calculating the gradient of energy on the basis of a simplified SEA matrix in which all coupling loss factors θji with j>i have been substituted according to ηijnijinj;
    • identifying the internal loss factors causing the M highest gradients as dominant internal loss factors and the coupling loss factors causing the N highest products, which each consist of a gradient times its coupling loss factor, as dominant coupling loss factors;
    • calculating an optimization potential for each of the dominant internal and coupling loss factors as the maximum sub-system energy change which can be achieved by varying said loss factor; and
    • identifying the dominant internal and coupling loss factors with the K highest optimization potentials as optimization loss factors for the further vibro-acoustic optimization of the structure.
Owner:MAGNA STEYR FAHRZEUGTECHN

Concrete finishing tool with handle-mounted vibrating arrangement

A vibratory concrete finishing tool includes an elongated handle formed with a cylindrical configuration having an uppermost end and a lowermost end. A concrete working device has a planar bottom surface adapted to engage a wet concrete surface, and a receiver for removably receiving the lowermost end of the handle. A clamping and vibration transmitting arrangement is coupled externally to the lowermost end of the handle. An engine-driven vibratory mechanism is fixed to the clamping and vibration transmitting arrangement so that the vibratory mechanism is held in spaced relationship with the handle. The vibratory mechanism has a spinning crankshaft assembly with an eccentric weight mounted thereon.
Owner:ROZINSKI RICHARD M
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