TY - JOUR
T1 - Design sensitivity analysis for sequential structural-acoustic problems
AU - Kim, Nam H.
AU - Dong, Jun
AU - Choi, Kyung K.
AU - Vlahopoulos, N.
AU - Ma, Z. D.
AU - Castanier, M. P.
AU - Pierre, C.
PY - 2003/6/5
Y1 - 2003/6/5
N2 - A design sensitivity analysis of a sequential structural-acoustic problem is presented in which structural and acoustic behaviors are de-coupled. 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 re-analysis, 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 in which structural and acoustic behaviors are de-coupled. 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 re-analysis, 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.
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U2 - 10.1016/S0022-460X(02)01067-2
DO - 10.1016/S0022-460X(02)01067-2
M3 - Article
AN - SCOPUS:0038486197
SN - 0022-460X
VL - 263
SP - 569
EP - 591
JO - Journal of Sound and Vibration
JF - Journal of Sound and Vibration
IS - 3
ER -