CLOSED-FORM SOLUTIONS FOR PREDICTING INTERLAMINAR SHEAR STRESS AND HYGROTHERMOMECHANICAL NORMAL STRESS IN COMPOSITE BEAMS WITH RECTANGULAR AND TUBULAR CROSS-SECTIONS 机翻标题: 暂无翻译,请尝试点击翻译按钮。

会议集名/来源
SAMPE Conference Proceedings: SAMPE Conference, May 20-23, 2019, Charlotte, NC
出版年
2019
页码
1-24
会议地点
Charlotte
作者单位
California Polytechnic State University San Luis Obispo, California-USAThe University of Texas at ArlingtonCalifornia Polytechnic State University San Luis Obispo, California-USACalifornia Polytechnic State University San Luis Obispo, California-USA
作者
Sthanu Mahadev;Wen Chan;Taylor Best;Reiley Schraeger
摘要
Closed-form analytical solutions for thin-walled laminated composite beams with tubular and rectangular cross-sections are developed for evaluating interlaminar shear stress and thermally induced stresses. The formulations are fundamentally based on modified Composite lamination theory and parallel axis theorem. The present approach includes a variation of ply stiffness along the contour of the cross-section. Interlaminar shear stresses in cantilevered composite beams with rectangular cross-section under a transverse load is analytically determined to be independent of a temperature differential subjected to uniform temperature environment. An ANSYS based three-dimensional finite element model for computing thermal stresses of both cross-sections is further demonstrated. The results obtained from analytical solutions give an excellent agreement to finite element results. This mathematical model represents an efficient tool for structural design engineers to perform parametric studies during the preliminary design phase.
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