Modal Parameter Estimation on Automotive Development Ford Motor Company

Format:

Conference/Event

Author/Creator:

Sczibor, Sczibor, author.

Contributor:

Alves, Paulo S. L.

Bringhenti, Ilka

Conference Name:

SAE Brasil International Noise and Vibration Colloquium 2012 (2012-11-25 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Modal parameter identification is used to identify those parameters of the model which describe the dynamic properties of a vibration system. Structural dynamic methods and technologies have been used with great success by the automotive industry. Experimental Modal Analysis is the process of determining the modal parameters (modes, natural frequencies, damping factors) of a linear, time-invariant system. One common reason for experimental modal analysis is the verification or correction of the results of the analytical approach. Another reason to extract the modal parameters experimentally is due to its use for future evaluations such as structural modifications. This paper presents the Experimental Modal Analysis of a car in trimmed body configuration which represents a complex system due to the systems attached to it, increasing its damping and measuring noise. Both frequency and time domain system identification methods are studied to obtain the main modes of the structure. The process steps to correctly identify global modes are also addressed. Results from numerical model and actual physical testing are compared to the main flexible modes of the structure

Notes:

Vendor supplied data

Publisher Number:

2012-36-0641

Access Restriction:

Restricted for use by site license