대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

대한토목학회 (Korean Society of Civil Engeneers)
권호 표지

3차원 고차이론을 이용한 역대칭 앵글-플라이 복합재료 적층판의 동적거동

Transient Dynamic Behavior of Anti-symmetric Angle-ply Laminated Composite Plates using the Three-dimensional Higher-order Theory

한성천;천경식;최회권;장석윤
Han, Sung-Cheon;Chun, Kyoung-Sik;Choi, Hoi-Kwon;Chang, Suk-Yoon

  • 발행 : 2003.07.31

⟨ 이전 논문 다음 논문 ⟩

초록

복합적층 구조물의 보다 정확한 해석결과를 얻기 위해서는 종방향 전단변형, 종방향 수직 변형률/응력에 의한 효과와 두께방향좌표에 관한 면내변위의 비선형 변화등이 고려되어야 한다. 본 연구에서는 3차원 고차이론을 이용하여 역대칭 앵글-플라이 복합적층판과 샌드위치판의 동적거동을 결정하였다. 단순지지된 적층판과 샌드위치의 해는 이중삼각함수형태의 퓨리에 급수로 변환한 Navier 해법을 사용하였고, Newmark 직접적분법이 시간에 관한 운동방정식의 적분과 시간이력을 해결하기 위해 적용되었다. 본 연구에서 제시한 모델의 거동은 일차전단변형, 고차전단변형이론에 의한 결과와 비교하였다.

To obtain more accurate response of laminated composite structures, the effect of transverse shear deformation, transverse normal strain/stress and a nonlinear variation of in-plane displacements with respect to the thickness coordinate need to be considered in the analysis. A three-dimensional higher-order theory, that requires no shear correction coefficients, is used to determine the transient dynamic response of laminated composite and sandwich plates. Solutions of simply-supported anti-symmetric angle-ply laminated composite plates and sandwiches are obtained in closed form using Navier's technique and the Newmark's direct integration technique is used for carrying out the integration of the equation of motion, to obtain the response history. Results are compared with those computed using the first order and the other higher order theories.

키워드

참고문헌

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