In the early phase of setting targets for a project, the acoustic requirement for a most stiff body in white seams to be in conflict to a general reduction in weight for better dynamic and lower emission. If we consider the progress in body design the high stiffness in bending and torque was not primary achieved by using more heave material, it was mainly done by an excellent engineering, designing every single detail of a body structure respecting the different forces and moments working at a body. Enabling additional lightweight materials it was possible to reduce the percentage of actual bodies at the overall vehicle. Respecting that the low level of interior noise at the premium class will turn into the next years, the reduction of wind and tire noise and all kind of background noise will be necessary to enable a good sound design for a comfort and dynamic behaviour for the customer. For a most effective design and layout of sound insulation and all parts of trim two main conditions loom large of importance. The detailed acknowledgment of every detailed source of sound from power train, tires and aeroacoustics must be the basic for a detailed design of the transfer path. With all modern analyses and simulation techniques it should be possible to optimise the investigation of weight. In the early phase of a concept it is necessary that the acoustic engineer plays a dominant role in enabling lightweight components. Therefore the acoustic requirements may sometimes cause an investigation in weight, but combined with a most effective and multifunctional use of it, it is possible to drop down the summary weight of the overall vehicle. With the additional integration of lightweight components, the acoustic engineer plays an important role for the achievement of targets in weight.


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    Title :

    "Acoustic and lightweight design: Is this conflict of objectives in future vehicle concepts solvable ?"


    Contributors:


    Publication date :

    2008


    Size :

    16 Seiten, 21 Bilder, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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