Exact Solution of Spatial Warping Curved Beams in Natural Coordinates
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摘要: 基于现有空间曲线梁理论,考虑与扭转有关的翘曲变形和横向剪切变形的影响,建立了自然标架下空间曲线梁的内力和变形的解析解答.将该解答应用于受均布扭矩和竖向分布荷载的平面曲线梁的分析,将所得结果与Heins解答进行比较,证明了理论的正确.并应用该理论分析了解析式中翘曲和横向剪切变形项的影响.Abstract: The purpose is to present an exact analytical solution of the spatial curved beam under multiple loads based on the existed theory.The transverse shear deformation and torsion-related warping effects are taken into account.By sing this solution,a plane curved beam subjected to uniform vertical loads and torsions was analyzed.The accuracy and the efficiency of present theory were demonstrated by comparing its numerical results with Heins.solution.Besides,the effects of the transverse shear deformation and torsion-related warping on the deformations of the beam were discussed.
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Key words:
- curved beam /
- multiple load /
- warping /
- natural coordinate /
- analytical solution
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[1] 赵跃宇,康厚军,冯锐,等.曲线梁研究进展[J].力学进展,2006,36(2):170-186. [2] Heins C P. 结构杆件的弯曲与扭转[M].常岭,吴绍本 译校.北京:人民交通出版社,1981. [3] 姚玲森.曲线梁[M].北京:人民交通出版社,1989. [4] Tufekci E, Dogruer O Y. Exact solution of out-of-plane problems of an arch with varying curvature and cross section[J].Journal of Engineering Mechanics,2006,132(6): 600-609. doi: 10.1061/(ASCE)0733-9399(2006)132:6(600) [5] 赵颖华,李晓飞.多跨曲线桥在集中荷载和变温作用下横向位移[J].沈阳建筑工程学院学报,2004,20(2):97-99. [6] LI Xiao-fei, LIU Feng, ZHAO Ying-hua.Analytical solution for in-plane displacement of multi-span curved bridge[A].In:PENG Qi-yuan,Kelvin C P,Wang,et al,Eds.International Conference on Transportation Engineering 2007[C].Chengdu:ASCE,2007,1022-1027. [7] 邵容光,夏淦. 混凝土弯梁桥[M].北京:人民交通出版社,1994. [8] 高岛春生.曲线桥梁[M].张德礼 译.北京:中国建筑工业出版社,1979. [9] 孙广华.曲线桥梁计算[M].北京:人民交通出版社,1995. [10] 熊汉伟,张培源.空间曲杆有限元分析[J].重庆大学学报,1997,20(4):31-36. [11] 朱渝春,张培源,严波.封闭薄壁截面空间曲杆的双力矩[J].应用数学和力学,1999,20(12):1252-1258. [12] 虞爱民,易明.自然弯扭梁广义翘曲坐标的求解[J].应用数学和力学,2004,25(10):1067-1075. doi: 10.shtml [13] 郑安节,张晓敏,严波.空间曲杆小变形问题自然标架的矩阵分析解[J].重庆大学学报,2006,29(6):124-126.
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