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首页> 外文会议>SAMPE Conference >CLOSED-FORM SOLUTIONS FOR PREDICTING INTERLAMINAR SHEAR STRESS AND HYGROTHERMOMECHANICAL NORMAL STRESS IN COMPOSITE BEAMS WITH RECTANGULAR AND TUBULAR CROSS-SECTIONS
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CLOSED-FORM SOLUTIONS FOR PREDICTING INTERLAMINAR SHEAR STRESS AND HYGROTHERMOMECHANICAL NORMAL STRESS IN COMPOSITE BEAMS WITH RECTANGULAR AND TUBULAR CROSS-SECTIONS

机译：用于预测具有矩形和管状横截面的复合梁中间剪切应力和湿热机械正常应力的闭合溶液

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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.
机译：开发用于评估层间剪切应力和热诱导应力的薄壁层压复合梁的闭合形式分析溶液。这些制剂基于改进的复合层压理论和平行轴定理基础。本方法包括沿横截面的轮廓的帘布层刚度的变化。在横向载荷下具有矩形横截面的悬臂复合梁的Interlaminar剪切应力被分析地确定与经受均匀温度环境的温差差异。进一步证明了用于计算两个横截面的热应力的基于ANSYS的三维有限元模型。从分析解决方案获得的结果提供了有限元结果的良好协议。该数学模型代表了结构设计工程师的有效工具，用于在初步设计阶段进行参数研究。

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