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Metamodels Resulting from Two Different Geometry Morphing Approaches Are Suitable to Direct the Modification of Structure-Born Noise Transfer in the Digital Design Phase

Wysocki, Timo von; Leupolz, Michael; Gauterin, Frank

Abstract (englisch):
Noise vibration and harshness (NVH) development often takes place in the later development phases. Shifting the optimization to the early digital development phase enables more parameters to participate in the optimization and leads to a more holistic development process. Digital NVH development often modifies system and component frequency response functions (FRFs) using finite element (FE) simulation. Currently, the often manual process of creating new FE models for modified designs makes a systematic evaluation of many designs difficult and time-consuming. In this paper, we take on these difficulties and use both a Direct Morphing approach and a Box Morphing approach to automatically adopt the first existing FE models to modified designs. We use the generated simulation results to fit metamodels describing the correlation between geometrical parameters and characteristic FRF values. These metamodels provide an easy and fast to use tool for designers to consider NVH demands. In a simulation example, we demonstrate the capabilities by modifying the kinematic hard points of a vehicle suspension and using them to modify the noise transfer sensitivity. ... mehr

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DOI: 10.3390/asi3040047
Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2571-5577
KITopen-ID: 1000126091
Erschienen in Applied system innovation
Band 3
Heft 4
Seiten 47
Bemerkung zur Veröffentlichung This article belongs to the Special Issue Feature Paper Collection in Applied System Innovation
Vorab online veröffentlicht am 06.11.2020
Schlagwörter morphing; optimization; metamodel; NVH; FEM; interpolation; transfer function; optislang; ANSA; python
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