보강된 적층 복합재료 주름판의 진동해석
Vibration Analysis of Stiffened Corrugated Composite Plates
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
본 연구에서는 Rayleigh-Ritz 법을 이용하여 열린 단면보로 보강된 복합재료 주름판의 자유진동 특성을 연구하였다. 복합재료 주름판에 대해 등가균질모델을 이용하였으며, 이 등가모델은 주름판을 두 수직방향에 대해서로 다른 재료특성을 갖도록 직교이방성판으로 취급한다. 등가 직교이방성판의 운동은 회전 관성 및 횡전단변형을 고려하기 위해 1차 전단변형이론을 기초로 표현된다. 또한 진동형상에서 보강재의 위치에 따른 국부 형상을표현하기 위해 이산보강이론이 적용되었다. 제안된 해석 방법에 대한 타당성을 검증하기 위해 ANSYS를 이용한유한요소해석을 수행하였으며, 두 방법을 이용해 얻은 진동수 및 진동형상을 비교하였다.
Abstract
The free vibration characteristics of corrugated laminated composite plates with axial stiffeners is investigated using the Rayleigh-Ritz method. The plate is stiffened by beams with open cross-section area. The equivalent homogenization model is used for the corrugated laminated composite plates. This homogenization model is treated a corrugated plate as an orthotropic plate that has different material properties in two perpendicular directions. The motion of equivalent plate is represented on the basis of the first order shear deformation theory (FSDT) to account for the effect of rotary inertia and transverse shear deformation. Stiffeners are considered as discrete elements to predict the local vibration mode to be generated by the presence of stiffeners. To validate the proposed analytical approach, natural frequencies and vibration mode shapes from the analytical method are compared with those from the FEA by ANSYS.
참고문헌 (12)
- Thill, C., "Investigation of Trapezoidal Corrugated Aramid", epoxy Laminates under Large Tensile Displacements Transverse to the Corrugation Direction, 2010, pp.41(1), 168~176
- Winkler, M., "Influence of Corrugation Geometry on the Substitute Stiffness Matrix of Corrugated Laminates", Composite Structures, 94(9), pp.2827~2833 (2012)
- Xia, Y., "Equivalent Models of Corrugated Panels", International Journal of Solids and Structures, 49(13), pp.1453~1462 (2012)
- Park, K. J., "Evaluation of Homogenized Effective Properties for Corrugated Composite Panels", Composite Structures, 140, pp.644~654 (2016)
- 박경조, "적층 복합재료 주름판의 진동해석", Composites Research, 29(6), pp.347~352 (2016), 한국복합재료학회
- Bai, J. B., "A Corrugated Flexible Composite Skin for Morphing Applications", Composites Part B, 131, pp.134~143 (2017)
- Karakoti, A., "Deformation Characteristics of Sinusoidally-corrugated Laminated Composite Panel-A Higherorder Finite Element Approach", Composite Structures, 216, pp.151~158 (2019)
- 박경조, "적층 복합재료 사다리꼴 주름판의 좌굴해석", Composites Research, 32(4), pp.185~190 (2019), 한국복합재료학회
- Tong, J. Z., "Shear Resistance of Stiffened Steel Corrugated Shear Walls", Thin-Walled Structures, 127, pp.76~89 (2018)
- Maleki, S., "3D Wind Buckling Analysis of Long Steel Corrugated Silos with Vertical Stiffeners", Engineering Failure Analysis, 90, pp.156~167 (2018)
- Wang, S., "Shear Behavior of Steel I-girder with Stiffened Corrugated Web, Part I : Experimental Study", Thin-Walled Structures, 140, pp.248~262 (2019)
- He, J., "Shear behavior of Steel I-girder with Stiffened Corrugated Web, Part II : Numerical Study", Thin-Walled Structures, 147, pp.106025~ (2020)