Porous materials are extensively used in the construction of automotive sound package parts, due to their intrinsic capability of dissipating energy through different mechanisms. The issue related to the optimization of sound package parts (in terms of weight, cost, performances) has led to the need of models suitable for the analysis of porous materials' dynamical behavior and for this, along the years, several analytical and numerical models were proposed, all based on the system of equations initially developed by Biot. In particular, since about 10 years, FE implementations of Biot's system of equations have been available in commercial software programs but their application to sound package parts has been limited to a few isolated cases. This is due, partially at least, to the difficulty of smoothly integrating this type of analyses into the virtual NVH vehicle development.This paper presents a tool, called Treasuri2FE, that implements Biot's system of equations and is fully integrated inside Nastran. Treasuri2FE allows including in an efficient and flexible way sound package parts into Nastran vehicle FE models used for NVH analyses. All the steps that are necessary to obtain this, in particular the management of the incompatibility between the FE mesh of the sound package part and the FE mesh of the vehicle, are automatically carried out within Nastran.Furthermore, the tool can be used in conjunction with Nastran ACMS and DMP, to improve computational efficiency.In this way, the evaluation of the effect of a sound package part on the vibro-acoustic response of a vehicle can smoothly be introduced into virtual NVH vehicle development, making this important type of CAE analysis available to decision-makers.The paper presents the tool and its functionalities, together with application examples on full-vehicle models up to 500Hz.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Treasuri2/FE: A Tool for the FE Simulation of Sound Package Parts Fully Integrated in Nastran


    Additional title:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars – Mech. Syst


    Contributors:

    Conference:

    SAE 2009 Noise and Vibration Conference and Exhibition ; 2009



    Publication date :

    2009-05-19


    Size :

    19 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Development of the Integrated Probabilistic Analysis Software Package, Febrel-MSC/NASTRAN

    Torng, T. / Lin, H. / Chang, C. et al. | British Library Conference Proceedings | 1995


    Development of the integrated probabilistic analysis software package, FEBREL-MSC/NASTRAN

    Torng, T / Lin, ang, C, H-ZChang, / Khalessi, M et al. | AIAA | 1995


    An Integrated Design Tool for Tow-Steering Composites in Abaqus and MSC.Patran/Nastran

    Liu, Xin / Liu, Bangde / Kothari, Twinkle et al. | TIBKAT | 2023


    An Integrated Design Tool for Tow-steering Composites in Abaqus and MSC.Patran/Nastran

    Liu, Xin / Liu, Bangde / Kothari, Twinkle et al. | AIAA | 2023