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Abstract: The
orthogonal spherical wave source boundary point is proposed to the
acoustic shape sensitivity of any point in an acoustic field. In the
method, the problems of the non-uniqueness and singularity caused by
using the boundary element method are avoided, and the numerical
calculation becomes easier. Furthermore, the nearfield acoustic
holography is used to reconstruct the surface normal velocity and its
difference on the source surface in the acoustic shape sensitivity
analysis, which avoids the straightforward calculation of those acoustic
qualities. The numerical simulations on some typical sources validate
the feasibility and correctness of the proposed method.
Key words: Acoustic shape sensitivity Boundary point
Spherical wave Nearfield acoustic holography
CLC No: TB532 TB533+.2
国家自然科学基金(10504006, 50575063)和安徽省自然科学基金(050440107)资助项目. Received 20060227, received in revised form 20060920
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