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弹性地基复合曲梁抗弯力学性能研究

DOI: 10.3969/j.issn.1006??7043.201303076

Keywords: 复合材料层合曲梁, 弹性地基, 层间正应力, 平面内正应力, 力学分析, 弯曲性能

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Abstract:

针对曲梁结构在弹性地基作用下的抗弯力学性能进行了研究,讨论了内外径之比(??Ri/Ro??)对层间正应力和平面内正应力的影响。在此基础上,研究了由两种不同材料组成的复合曲梁,确定了平面内正应力中性轴的位置,考虑其内外表面处应力为零、层间正应力及位移在厚度方向连续的边界条件,求解纯弯曲载荷下复合曲梁的层间拉应力和平面内拉应力解答,进一步讨论了两种材料的不同体积分数、材料参数和放置位置对于复合曲梁应力的影响。此外,本文可推广适用于多层不同材料组成的复合曲梁,为解决实际工程中矩形截面复合曲梁强度,尤其是层间强度提供了有效方便的计算方法。??

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