The rising demands for ride comfort and increasingly shorter development times have led to the development of objective and virtual methods at the BMW Group that enable a target-oriented design of the ride comfort properties in an intelligent and efficiently linked process within a very early development phase. During the objectification of ride comfort, characteristic values are determined for the single subjective perceptions (phenomena) using correlation analyses of objective vehicle measurements and subjective assessments. The necessary subjective assessments are carried out in the real vehicle on the road or in the BMW vibration and acoustic simulator (VAS) depending on the use case. The methods of simulation for the design of ride comfort are spread over a basic design process in three levels that leads from simple algebraic equations in level 1 to complex multi-body simulation models with very high levels of detail in level 3. Level 1 involves a basic design of the suspension, auxiliary and rebound buffer springs, stabilisers, damper top mounts and damper characteristic curves. The focal point in level 2 is the optimisation of the damper characteristic curves. Level 3 involves detailed analysis and a check of the basically configured set-up using the determined characteristic values and a subjective assessment on the BMW vibration and acoustic simulator (VAS). Using the new BMW 1 Series as an example, these methods are used to achieve efficient and target-oriented product development. On the basis of the definition of ride comfort target values, the basic design is used to create a good starting point for hardware tuning. The tight interaction of objectification, simulation and tuning on road and the expansion of system limits with new component concepts has ultimately effected that a significant improvement in the comfort properties compared to the predecessor has been achieved for the new BMW 1 Series.


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    Title :

    Ride comfort design process using objective and virtual methods


    Contributors:


    Publication date :

    2012


    Size :

    24 Seiten, 15 Bilder, 1 Tabelle, 12 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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