Synonyms were used for: Noise vibration,
Search without synonyms: title: Noise and Vibration; Noise and vibration, 2010

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    Accounting for Manufacturing Variability in Interior Noise Computations

    Allen, Michael J. / Vlahopoulos, Nickolas | SAE Technical Papers | 2001
    incorporates the concept of fast probability integration with finite element (FEA) and boundary element analysis (BEA) for producing the probabilistic ...
    Keywords: Simulation and modeling , Interior noise

    A Computational Approach for Evaluating the Acoustic Detection of a Military Vehicle

    Gorsich, David / Vlahopoulos, Nickolas / Mantey, Robert et al. | SAE Technical Papers | 2005
    atmosphere and evaluates detectable distance. ADRPM predicts the distance of detection for a noise source based on the acoustic signature of the ...
    Keywords: Noise

    A Hybrid Finite Element Formulation for Analyzing Systems of Beams and Plates in the Mid-Frequency Range

    Vlahopoulos, Nickolas / Hong, Sang Bum | SAE Technical Papers | 2003
    A hybrid Finite Element Analysis (hybrid FEA) formulation has been developed in the past for computing the mid-frequency vibration of ...

    Application of a Hybrid Finite Element Formulation for Analyzing the Structure-Borne Noise in a Body-In-White

    Vlahopoulos, Nickolas / Hong, Sang Bum | SAE Technical Papers | 2005
    analyses. The correlation demonstrates that the hybrid FEA can be employed for structure-borne vibration and noise analysis during the design stage ...
    Keywords: Simulation and modeling

    A Substructuring Formulation for the Energy Finite Element Analysis

    Zhang, Geng / Vlahopoulos, Nickolas | SAE Technical Papers | 2007
    number of elements which include both structural and interior fluid elements, while certain parts of the structure are considered to be exposed ...
    Keywords: Simulation and modeling

    Combining an Energy Boundary Element with an Energy Finite Element Analysis for Airborne Noise Simulations

    Zhang, Geng / He, Jim / Vlahopoulos, Nickolas | SAE Technical Papers | 2007
    Element Analysis (EFEA) has been developed for computing the structural vibration of complex structures at high frequencies and validations have ...
    Keywords: Vibration , Noise

    Combining Energy Boundary Element with Energy Finite Element Simulations for Vehicle Airborne Noise Predictions

    Wang, Aimin / Vlahopoulos, Nickolas | SAE Technical Papers | 2008
    Element Analysis (EFEA) has been developed for computing the structural vibration of complex structures at high frequencies and validations have ...

    Comparison between Finite Element and Hybrid Finite Element Results to Test Data for the Vibration of a Production Car Body

    Sander, David / Böhler, Elmar / Zhang, Geng et al. | SAE Technical Papers | 2019
    and energy methods for mid-frequency computations. The method is appropriate for computing the vibration of structures which are comprised by ...
    Keywords: Vibration

    Computation of Wind Noise Radiated from a Flexible and Elastically Supported Panel

    Saltsman, Benjamin J. / Allen, Michael J. / Vlahopoulos, Nickolas | SAE Technical Papers | 2001
    A numerical methodology based on the finite element and boundary element methods is presented for computing the noise radiated from an ...

    Coupling of Finite Element and Energy Finite Element Solutions for Calculating the Vibration of Co-linear Beams in the Mid-Frequency Range

    Vlahopoulos, Nickolas / Zhao, Xi | SAE Technical Papers | 1999
    is comprised by some members that contain several wavelengths and some members that contain a small number of wavelengths. The former are ...

    Design of Rotorcraft Gearbox Foundation for Reduced Vibration and Increased Crashworthiness Characteristics

    Zhang, Geng / Vlahopoulos, Nickolas / Sbragio, Ricardo | SAE Technical Papers | 2011
    , noise, safety, etc. Simulation models are employed for assessing and potentially improving a vehicle's performance in individual technical areas ...
    Keywords: CAD, CAM, and CAE , Simulation and modeling

    Development and Validation of a Computational Process for Pass-By Noise Simulation

    Moenssen, David J. / Zhang, Kevin / Vlahopoulos, Nickolas et al. | SAE Technical Papers | 2001
    comparing the actual and the computationally reconstructed acoustic field for an engine intake manifold. The overall pass-by noise simulation ...
    Keywords: Simulation and modeling , Noise

    Energy Finite Element Analysis Developments for Vibration Analysis of Composite Aircraft Structures

    Vlahopoulos, Nickolas / Schiller, Noah / Lee, Sungmin | SAE Technical Papers | 2011
    and the vibration levels within the entire system can be computed. The new EFEA formulation for modeling composite laminate structures is ...

    Energy Finite Element Analysis of the NASA Aluminum Testbed Cylinder

    Wang, Aimin / Klos, Jacob / Vlahopoulos, Nickolas et al. | SAE Technical Papers | 2005
    An energy finite element analysis (EFEA) formulation is developed for predicting high frequency vibration response of cylindrical shells ...

    Engaging Energy Based Structural-Acoustic Simulations in Multi-Discipline Design

    Wang, Aimin / Zhang, Geng / Vlahopoulos, Nickolas | SAE Technical Papers | 2009
    In order to be effective and maximize the weight and cost savings when designing for noise and vibration attributes, the structural ...

    Hybrid Finite Element Analysis of a Rotorcraft

    Butts, Donald / Mendoza, Jeff / Vlahopoulos, Nickolas et al. | SAE Technical Papers | 2013
    vibration analysis is conducted. The power flow through the dynamic impedance elements is computed and applied as excitation to the EFEA model of ...

    Integration of Finite Element and Boundary Element Methods for Simulating the Noise Radiated From a Flexible Panel Subjected to Boundary Layer Excitation

    Allen, Michael J. / Vlahopoulos, Nickolas | SAE Technical Papers | 1999
    In this paper an algorithm is developed for combining finite element analysis and boundary element techniques in order to compute the noise ...
    Keywords: Noise

    Interior Aircraft Noise Computations due to TBL Excitation using the Energy Finite Element Analysis

    He, Jim / Vlahopoulos, Nickolas / Sbragio, Ricardo et al. | SAE Technical Papers | 2009
    computing the vibration and the interior noise induced from exterior turbulent boundary layer excitation, and discussing the correlation between ...
    Keywords: Simulation and modeling , Interior noise

    Mid-Frequency Vibration Analysis of Systems Containing One Type of Energy Based on a Hybrid Finite Element Formulation

    Vlahopoulos, Nickolas / Zhao, Xi | SAE Technical Papers | 2001
    . In the mid-frequency range a system is comprised of both long and short members. Long members contain several wavelengths and they are ...

    Modeling of Stiffened Panels Using the Energy Finite Element Analysis

    Wang, Aimin / Vlahopoulos, Nickolas / Sbragio, Ricardo | SAE Technical Papers | 2011
    Stiffened panels are encountered in many engineering systems since the stiffeners comprise the mechanism which provides support and ...
    Keywords: Simulation and modeling