Power Input Mapping for Vibro-Acoustic Design Université de Sherbrooke

Format:

Book

Conference/Event

Author/Creator:

Belgacem, walid, author.

Contributor:

Atalla, Noureddine

Khalladi, Malek

Conference Name:

11th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference (2020-06-17 : Graz, Austria)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

The input mobility is an important vibro-acoustic parameter used by engineers in the industrial design process. In fact, this information guides the choice of the connection between the vibrational source and the receiver. To select the most effective connection points, the input mobility is characterized at every possible location of the receiver structure leading to a mapping of the input mobility. Several works propose to compute the full map by averaging the input mobility in a given frequency bands over a Finite Elements (FE) mesh of the receiver structure. By nature, the input mobility is a Frequency Response Function (FRF); consequently, it does not consider the frequency content of the source. This paper presents a method to compute a full map of input power instead of input mobility. The proposed method uses a modal decomposition on the receiver structure, source frequency behaviour and frequency integration by introducing frequency weighting coefficients (Human vibration perception and source cycle use in real conditions). Thus, a single map is provided, that condensate the information of the input power, for the real source, allowing the engineer to make the best choice of the source-receiver connections early in the design process. Several examples are presented to demonstrate the usefulness of the proposed method

Notes:

Vendor supplied data

Publisher Number:

2020-01-1576

Access Restriction:

Restricted for use by site license