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
- 발행연도
- 2020.12
- 수록면
- 481 - 488 (8page)
이용수
초록· 키워드
오류제보하기
Composite materialsuch as glass-fiber reinforced plastic and carbon-fiber reinforced plastic (CFRP) shows anisotropic property and have been widely used for structural members and outfitings of ships. The structural safety of composite structures has been generally evaluated via finite element analysis. This paper presents a technique for updating the finite element model of anisotropic beams or plates via natural frequencies. The finite element model updates involved a compensation process of anisotropic material properties, such as the elastic and shear moduli of orthotropic structural members. The technique adopted was based on a discrete genetic algorithm, which is an optimization technique. The cost function was adopted to assess the optimization problem, which consisted of the calculated and referenced low-order natural frequencies for the target structure. The optimization process was implemented with MATLAB, which includes the finite element updates and the corresponding natural frequency calculations with MSC/NASTRAN. Material properties of a virtual cantilevered orthotropic beam were estimated to verify the presented method and the results obtained were compared with the reference values. Furthermore, the technique was applied to a cantilevered CFRP beam to successfully estimate the unknown material properties.
목차
ABSTRACT
1. Introduction
2. Finite Element Model Update
3. Discrete Genetic Algorithm
4. Numerical Examples
5. Conclusions
References
참고문헌 (9)
참고문헌 신청
Chen, N.Z. Sun, H.H., & Carlos G.S. (2003). Reliability Analysis of a Ship Hull in Composite Material. Composite Structures, 62, 59-66. https://doi.org/10.1016/S0263-8223(03)00084-9
JASTRA Channel. (2020). Digital Twin for Ship Structures. Retrieved May 2020 from https://www.youtube.com/watch?v=lCZ2faRyfA8
Giagopoulos, D.,Ntotsios. E., Papadimitriou, E., & Natsiavas, S. (2009). Finite Element Model Updating of an Experimental Vehicle Model Using Measured Modal Characteristics. Proceedings of 2nd ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2009), Rhodes, Greece, 768-780. https://hdl.handle.net/2134/10772
Hofmeister, B., Bruns, M., & Rolfes, M. (2019). Finite Element Model Updating Using Deterministic Optimisation: A Global Pattern Search Approach. Engineering Structures, 195, 373-381. https://doi.org/10.1016/j.engstruct.2019.05.047
Hwang, J.Y., Kim, K., Lee, K.H., Cho, D.S., Choi, T., Kim, J.H., & Shin, S.Y. (2018). Modal Property Evaluation of Cantilever CFRP Beams with Different Lay-up Orientation. Proceedings of KAOSTS 2018, Jeju, South Korea, 772-775.
JASTRA Channel. (2020). Digital Twin for Ship Structures. Retrieved May 2020 from https://www.youtube.com/watch?v=lCZ2faRyfA8
Giagopoulos, D.,Ntotsios. E., Papadimitriou, E., & Natsiavas, S. (2009). Finite Element Model Updating of an Experimental Vehicle Model Using Measured Modal Characteristics. Proceedings of 2nd ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2009), Rhodes, Greece, 768-780. https://hdl.handle.net/2134/10772
Hofmeister, B., Bruns, M., & Rolfes, M. (2019). Finite Element Model Updating Using Deterministic Optimisation: A Global Pattern Search Approach. Engineering Structures, 195, 373-381. https://doi.org/10.1016/j.engstruct.2019.05.047
Hwang, J.Y., Kim, K., Lee, K.H., Cho, D.S., Choi, T., Kim, J.H., & Shin, S.Y. (2018). Modal Property Evaluation of Cantilever CFRP Beams with Different Lay-up Orientation. Proceedings of KAOSTS 2018, Jeju, South Korea, 772-775.
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