Characteristic Analysis of Composite Thin\|Walled\= Beams under Constrained Torsion
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摘要: 基于Vlasov理论,本文建立了任意形状闭室复合材料薄壁梁限制扭转力学分析的分层翘曲模型.文中考虑了剪切和翘曲的影响,并分析了材料和铺层对翘曲位移与应力的影响,建立了相应的升阶谱元法,算例表明,复合材料薄壁梁各分层的翘曲位移及应力相差较大.Abstract: Based on Vlasov theory, a layered warping model was presented for mechanical analysis of composite thin-walled beams with arbitrary closed-section. Besides the effects of shearing strain and torsion warping, the influences of materialsand the ply arrangement on the warping displacement and stress are also discussed. The numerical results show that the warping displacement and stress of the composite thin-walled beam are differ from layer to layer due to influence of materials and the ply arrangement.
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Key words:
- composite materials /
- thin-walled structures beams /
- twist /
- layered warping
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[1] Bauld N R Jr, Tzeng L S. A vlasov theory for fiberreinforced beams with thinwalled open cross sections[J].International Journal of Solids Structure,1984,203:277~297. [2]Kobelev V V, Laaarichev A D. Model of thinwalled anisotropic rods . Mekhanika Kompoztinykh Materialov,1988,241:102~109． [3]Chandra R, Chopra I． Experimental and theoretical analysis of composites Ibeams with elastic couplings[J]． AIAA Journal,1991,29(12):2197~2217. [4]Chandra R, Chopra I. Structural behavior of twocell composites rotor blades with elastic couplings[J]. AIAA Journal,1992,30(12):2914~2921. [5]诸德超．弹性薄壁杆件的平衡理论[J]．北京航空学院学报,1957(3):39~60． [6]诸德超．升阶谱有限元法[M]．北京:国防工业出版社,1993. -
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