Evaluation of Off-Highway Vehicle Cab Noise and Vibration Using Inverse Matrix Techniques Michigan Technological University

Format:

Conference/Event

Author/Creator:

Gwaltney, Geoffrey D., author.

Conference Name:

International Off-Highway & Powerplant Congress & Exposition (1999-09-13 : Indianapolis, Indiana, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Noise Path Analysis techniques (NPA) have been developed and refined by the automotive industry for structure-borne noise and vibration evaluation of their products. Off-highway vehicles, particularly those with enclosed cabs, are excellent candidates for the application of these techniques. Like automobiles, many off-highway machines are typically driven by a rotating power source, have a well-defined acoustic receiver space, and use some form of isolation between source and receiver sub-systems. These structural characteristics make NPA a useful tool for identifying dominant sources and energy transfer paths.The objectives of this paper are to revisit the fundamental theory of matrix inversion as it applies to NPA techniques, and to address the common setup and measurement issues encountered when acquiring noise path data on off-highway machines. A general overview of the procedures involved in applying NPA to an off-highway machine will be presented. Selection and measurement of target frequency response functions (FRF), as well as the measurement of vibro-acoustic FRF's using reciprocal techniques, will be discussed. Sub-system selection and appropriate measurement boundary conditions will also be emphasized

Notes:

Vendor supplied data

Publisher Number:

1999-01-2815

Access Restriction:

Restricted for use by site license