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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
Korean Society for Precision Engineering 한국정밀공학회 학술발표대회 논문집 한국정밀공학회 2005년도 추계학술대회 논문요약집
발행연도
2005.10
수록면
402 - 407 (6page)

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In this paper, a structural damage identification method (SDIM) is developed to identify the line crack-like directional damages generated within a cylindrical shell. First, the equations of motion for a damaged cylindrical shell are derived. Based on a theory of continuum damage mechanics, a small material volume containing a directional damage is represented by the effective orthotropic elastic stiffness, which is dependent of the size and the orientation of the damage with respect to the global coordinates. The present SDIM is then derived from the frequency response function (FRF) directly solved from the dynamic equations of the damaged cylindrical shell. In contrast with most existing SDIMs which require the modal parameters measured in both intact and damaged states, the present SDIM requires only the FRF-data measured in damaged state. By virtue of utilizing FRF-data, one may choose as many sets of excitation frequency and FRF measurement point as needed to acquire a sufficient number of equations for damage identification analysis. The numerically simulated damage identification tests are conducted to study the feasibility of the present SDIM.

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ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. EQUATUINS OF MOTION FOR DAMAGED CYLINDRICAL SHELLS
Ⅲ. FORCED VIBRATION RESPONSES OF A DAMAGED CYLINDRICAL SHELL
Ⅳ. DAMAGE IDENTIFICATION THEORY
Ⅴ. NUMERICAL ILLUSTRATIONS AND DISCUSSIONS
Ⅵ. CONCLUSIONS
ACKNOWLEDGEMENT
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2009-555-016725556