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Abstract:
The natural frequencies and mode shapes for three models of a small test horn are determined using the 3-D acoustic finite element computer program COMIC (COMplex AcoustIC Pressure Analysis). The mode shapes are presented graphically and nodal planes are identified. Placing a wall of blocks and a missile inside the model does not make any significant change in natural frequencies, although the nodal planes have moved in the direction of the added elements. Keywords: Finite elements; Acoustic horn.
| Description: |
Interim rept. Sep 84-Aug 87 |
| Pages: |
35 |
| Report Date: |
20 JAN 88 |
| Contract Number: |
F33615-84-C-3216 |
| Report Number: |
A068391 |
Report Unavailable |
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