Fig. 1. General procedure for response PSD in most FEM codes
Fig. 2. An object of study
Fig. 3. Configuration for a axial test
Fig. 4. Excited force and measured acceleration(axial test)
Fig. 5. Configuration for a bending test
Fig. 6. Excited force and measured acceleration(bending test)
Fig. 7. FE beam/shell/solid model
Fig. 8. The test results
Fig. 9. Components motion(test results)
Fig. 10. Bending mode shape(using accelerometers attached on housing)
Fig. 11. Bending mode shape(using all accelerometers)
Fig. 12. The FEA results
Fig. 13. Grms of components(C1, C2, C3)
Fig. 14. Grms of measured and analyzed results
Fig. 15. Frame and measured points for components
Fig. 16. Proposed flight vibration spec. for C1
Fig. 17. Proposed flight vibration spec. for C2
Fig. 18. Proposed flight vibration spec. for C3
Fig. 19. Comparison of proposed flight vibration spec.
Fig. 20. Grms of proposed flight vibration spec.
Table 1. Properties of study object
Table 2. Data measured from the axial test
Table 3. Applied damping ratio
Table 4. Data obtained from FEA(axial)
Table 5. Proposed spec. by analyzed data(g2/Hz)
참고문헌
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