CAJ | 학술논문

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。
침대곡량결구재탄성지기작용하적항만역학성능진행료연구，토론료내외경지비（ Ri / Ro ）대층간정응력화평면내정응력적영향。재차기출상，연구료유량충불동재료조성적복합곡량，학정료평면내정응력중성축적위치，고필기내외표면처응력위령、층간정응력급위이재후도방향련속적변계조건，구해순만곡재하하복합곡량적층간랍응력화평면내랍응력해답，진일보토론료량충재료적불동체적분수、재료삼수화방치위치대우복합곡량응력적영향。차외，본문가추엄괄용우다층불동재료조성적복합곡량，위해결실제공정중구형절면복합곡량강도，우기시층간강도제공료유효방편적계산방법。
The effects of the inner outer radius ratio on the through-thickness tensile stress and the in-plane tension stress are discussed with a focus on the curved beam based on an elastic foundation. The curved beam composed of two different materials was analyzed,and the location of the neutral axis for the in-plane tension stress was deter-mined. Combining the boundary conditions of the zero internal and external surface stress,interlaminar normal stress,and continuous displacement in the thickness direction,the analytical solutions of the through-thickness ten-sile stress of the composite curved beam and in-plane normal stress were obtained under pure bending. Further-more,the effects of volume fraction,material parameters and the placed position of the two kinds of materials on the stress of the composite curved beam were investigated. As a convenient and effective calculation strategy,the method could be extended to the application of curved beams with multiple layers of different materials for solving the strength of rectangular composite curved beams,especially the interlaminar strength in practical engineering.