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HYBRID NVH DESIGN SENSITIVITY ANALYSIS OF GENERAL CROSS-SECTION BEAMS
Semyung Wang,Mohan Godse 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_2
This paper presents a hybrid process for design sensitivity analysis(DSA) of Noise, Vibration, and Harshness (NVH) responses with respect to general cross-section beam design parameters. Design parameters associated with general cross-section beams are overall height, overall width, and part thicknesses. In the hybrid process, NVH design sensitivities are computed using the chain rule of differentiation combining sizing and shape DSA results to get the total derivative. The beam design sensitivity expressions are analytically derived using the continuum approach and the adjoint variable method. NVH DSA is implemented external to the FEA program, MSC/NASTRAN. A simplified box model is used to validate and illustrate the approach.<br/>