지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.5 No.6
- 발행연도
- 2009.1
- 수록면
- 591 - 612 (22page)
이용수
초록· 키워드
오류제보하기
New insights are presented in simplified modeling and analysis of free vibrations of piezoelectric-based smart structures and systems. These consist, first, in extending the wide used piezoelectric–thermal analogy
(TA) simplified modeling approach in currently static actuation to piezoelectric free–vibrations under short-circuit(SC) and approximate open-circuit (OC) electric conditions; second, the popular piezoelectric strain induced –potential (IP) simplified modeling concept is revisited. It is shown that the IP resulting frequencies are insensitive to the electric SC/OC conditions; in particular, SC frequencies are found to be the same as those resulting from the newly proposed OC TA. Two-dimensional plane strain (PStrain) and plane stress (PStress) free-vibrations problems are then analyzed for above used SC and approximate OC electric conditions. It is shown theoretically and validated numerically that, for both SC and OC electric conditions, PStress frequencies are lower than PStrain ones, and that 3D frequencies are bounded from below by the former and from above by the latter. The same holds for the modal electro-mechanical coupling coefficient that is retained as a comparator of presented models and analyses.
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