TY - JOUR
T1 - A sequential adjoint variable method in design sensitivity analysis of NVH problems
AU - Kim, N. H.
AU - Choi, K. K.
AU - Dong, J.
AU - Pierre, C.
AU - Vlahopoulos, N.
AU - Ma, Z. D.
AU - Castanier, M.
PY - 2001
Y1 - 2001
N2 - A design sensitivity analysis of a sequential structural-acoustic problem is presented. A frequency response analysis is used to obtain the dynamic behavior of an automotive structure, while the boundary element method is used to solve the pressure response of an interior, acoustic domain. For the purposes of design sensitivity analysis, a direct differentiation method and an adjoint variable method are presented. In the adjoint variable method, an adjoint load is obtained from the acoustic boundary element reanalysis, while the adjoint solution is calculated from the structural dynamic re-analysis. The evaluation of pressure sensitivity only involves a numerical integration process for the structural part. The proposed sensitivity results are compared to finite difference sensitivity results with excellent agreement.
AB - A design sensitivity analysis of a sequential structural-acoustic problem is presented. A frequency response analysis is used to obtain the dynamic behavior of an automotive structure, while the boundary element method is used to solve the pressure response of an interior, acoustic domain. For the purposes of design sensitivity analysis, a direct differentiation method and an adjoint variable method are presented. In the adjoint variable method, an adjoint load is obtained from the acoustic boundary element reanalysis, while the adjoint solution is calculated from the structural dynamic re-analysis. The evaluation of pressure sensitivity only involves a numerical integration process for the structural part. The proposed sensitivity results are compared to finite difference sensitivity results with excellent agreement.
KW - Adjoint Variable Method
KW - Boundary Element Method
KW - Design Sensitivity Analysis
KW - Structural Acoustics
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M3 - Article
AN - SCOPUS:33646828791
VL - 28
SP - 117
EP - 126
JO - American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA
JF - American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA
IS - 28
ER -