Energy Finite Element Analysis System

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,988.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
N00014-04-M-0123
Agency Tracking Number:
N041-132-0396
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
MICHIGAN ENGINEERING SERVICES, LLC
2108 Maple Creek Circle, Ann Arbor, MI, 48108
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
134722656
Principal Investigator:
Nickolas Vlahopoulos
Managing Director
(734) 355-0084
nickvlahopoulos@netscape.net
Business Contact:
Christina Vlahopoulos
President
(734) 358-0777
christinavl@juno.com
Research Institution:
n/a
Abstract
New Naval initiatives, like the DD(X) program, impose stringent noise and vibration targets, and require assessment and reduction of noise due to machinery, flow, and propulsion. A typical surface ship structure exhibits thousands of normal modes below 30Hz. Thus, the frequency range of interest from signature and hull vibration objectives extends far beyond what existing finite element based methods can predict. High noise levels in living quarters and in working spaces due to acoustic emissions from machinery and operating aircraft creates habitability concerns which must also be addressed in new surface ship designs. Recently, an Energy Finite Element Analysis (EFEA) and an Energy Boundary Element Analysis (EBEA) formulation have been developed by the PI of the proposed project, and they have been applied for computing the vibration of submersible vehicles and the associated radiated noise at frequencies beyond the limits of conventional finite element methods. In addition to the Naval applications the EFEA and EBEA methods have been applied successfully in predicting vibration and acoustic fields in aerospace and automotive applications. The proposed project will lead to the development of an EFEA and EBEA system for the analysis of full scale surface ships and submarines in a robust and user friendly manner.

* information listed above is at the time of submission.

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