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
- 한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.15 Number.1
- 발행연도
- 2014.3
- 수록면
- 20 - 31 (12page)
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초록· 키워드
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This paper deals with the development of a realistic shape optimization of damaged columns that are subjected to conservative and non-conservative forces, using the Genetic Algorithm (GA). The analysis is based on the design of the most optimized shape of the column under the constraint of constant weight, considering the Static, Vibrational, and Flutter characteristics. Under the action of conservative and non-conservative longitudinal forces, an elastic column loses its stability. A numerical analysis based on FEM has been performed on a uniform damaged column, to compute the fundamental buckling load, vibration frequency, and flutter load, under various end restraints. An optimization search based on the Genetic Algorithm is then executed, to find the optimal shape design of the column. The optimized column references the one having the highest buckling load, highest vibration frequency, and highest flutter load, among all the possible shapes of the column, for a given volume. A comparison is then made between the values obtained for the optimized damaged column, and those obtained for the optimized undamaged column. The comparison reveals that the incorporation of damage in the column alters its optimal shape to only a certain extent. Also, the critical load and frequency values for the optimized damaged column are comparatively low, compared with those obtained for the optimized undamaged column. However, these results hold true only for moderate-intensity damage cases. For high intensity damage, the optimal shape may not remain the same, and may vary, according to the severity of damage.
목차
Abstract
1. Introduction
2. Description of Problem
3. Results and Discussion
4. Concluding Remarks
References
참고문헌 (14)
참고문헌 신청
1. [단행본] - Bolotin, V. V. / 1963 / Non-conservative problems of the Theory of Elastic Stability / Pergamon Press
2. [단행본] - Evan-Ivanowski / 1976 / Resonant Oscillations in Mechanical systems / Elsevier
3. [학술지(정기간행물)] - Elishakoff, I. / 2005 / Controversy associated with the so called follower forces / Applied Mechanics reviews 58 (2) : 117 ~ 142
4. [학술지(정기간행물)] - Sugiyama, Y. / 1999 / Realistic follower forces / J. Sound Vib 225 (4) : 779 ~ 782
5. [학술지(정기간행물)] - P.K. Datta / 2011 / Aeroelastic Behaviour of Aerospace Structural Elements with Follower Force: A Review / International Journal of Aeronautical and Space Sciences 12 (2) : 134 ~ 148
2. [단행본] - Evan-Ivanowski / 1976 / Resonant Oscillations in Mechanical systems / Elsevier
3. [학술지(정기간행물)] - Elishakoff, I. / 2005 / Controversy associated with the so called follower forces / Applied Mechanics reviews 58 (2) : 117 ~ 142
4. [학술지(정기간행물)] - Sugiyama, Y. / 1999 / Realistic follower forces / J. Sound Vib 225 (4) : 779 ~ 782
5. [학술지(정기간행물)] - P.K. Datta / 2011 / Aeroelastic Behaviour of Aerospace Structural Elements with Follower Force: A Review / International Journal of Aeronautical and Space Sciences 12 (2) : 134 ~ 148
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UCI(KEPA) : I410-ECN-0101-2015-550-001318147