| タイトル | Extension-bend-twist coupling behavior of thin-walled advanced composite beams with initial twist |
| 著者（英） | Kosmatka, J. B. |
| 著者所属（英） | California Univ. |
| 発行日 | 1991-01-01 |
| 言語 | eng |
| 内容記述 | An analytical model is developed for assessing the extension-bend-twist coupling behavior of nonhomogeneous anisotropic beams with initial twist. The model is formulated as a coupled two-dimensional boundary value problem, where the displacement solutions are defined with pretwist-dependent functions that represent the extension, bending, and torsion, and unknown functions that represent local in-plane deformations and out-of-plane cross-section warping. The unknown deformation functions are determined by applying the principle of minimum potential energy to a discretized representation of the cross section. Numerical results are presented that fully verify this approach and illustrate the strong extension-twist coupling behavior present in pretwisted beams with thin-wall laminated composite cross sections as a function of ply angle, initial twist level, and initial twist axis location. Cross-sections analyzed include; thin laminated rectangles with either asymmetric or symmetric ply stacking sequences and a thin-wall single cell D-section composed of a graphite/epoxy woven cloth. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 91A31936
AIAA PAPER 91-1023 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/349038 |
|
