축-굽힘 커플링을 고려한 균열보의 모드진동수 예측

다국어 초록 (Multilingual Abstract)

This paper presents a frequency equation to predict the modal frequencies of a cracked beam considering axial-bending coupling. The effects of axial-bending coupling are considered for the compatibilities of axial displacement and rotational angle at the crack location. Neglecting all incident evanescent wave motions results in a unified closed-form frequency equation for any support types of a beam. The validity of the proposed frequency equation is demonstrated through the comparison to the numerical results from the finite element analysis and experimental data. The effects of axial-bending coupling become significant with respect to crack depth ratio when a bending modal frequency is in the vicinity of an axial modal frequency.

참고문헌 (Reference)

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