Multidisciplinary optimization of a car component under NVH and weight constraints using RSM

Azadi, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2009-10027
  3. Publisher: American Society of Mechanical Engineers (ASME) , 2010
  4. Abstract:
  5. One of the important challenges in the auto industry is to reduce the mass of the vehicle while meeting structural performance requirements for Crashworthiness, Noise, Vibration and Harshness (NVH) etc. In this paper, a multidisciplinary optimization (MDO) of a car back-bonnet is investigated by using trie Response Surface Method (RSM). Firstly, a car body is fully surface modeled in CATIA and meshed in HYPERMESH software. Then, modal analysis of the finite element model is performed by NASTRAN software to find natural frequencies. Frequency map of that component is extracted and compared with a reference map to detect defects. Design of Experiments (DOE) methodologies is used for a screening of the design space and for the generation of approximation models using RSM techniques. Therefore, to optimize the model, improvement of the NVH behavior and minimization of the weight are imposed
  6. Keywords:
  7. Computer software ; Crashworthiness ; Design of experiments ; Mechanical engineering ; Modal analysis ; Optimization ; Approximation model ; Auto industry ; Car bodies ; Design spaces ; Finite element models ; Frequency map ; Multi-disciplinary optimizations ; NASTRAN software ; Noise , vibration and harshness ; Reference map ; Response surface method ; Structural performance ; Weight constraints ; Finite element method
  8. Source: 2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009, Lake Buena Vista, FL, 13 November 2009 through 19 November 2009 ; Volume 15 , 2010 , Pages 315-319 ; 9780791843888 (ISBN)
  9. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1644138