摘要
基于层合板类推法和一阶剪切变形位移理论 ,分析了两步法编织复合材料空心断面梁的刚度。导出了此类构件拉伸、弯曲、扭转、剪切及各种耦合刚度系数的计算公式。这些刚度系数被表为纤维与基体的类型、纤维编织角、纤维体积百分比。
The classical theory of laminated plates and the first-order shear deformation theory based on the Mindlin hypothesis are used to analyze the stiffness of hollow-box-section beam with 2-step three-dimensional braided composite.The formulas for calculating the coefficients of the tensile stiffness,flexural stiffness,torsional stiffness and shear stiffness as well as various coupling stiffness are derived.All these coefficients are functions of variables such as the fiber and matrix types,yarn orientation,total contents of fiber volume,and the geometric size of the hollow-box-section beam.
基金
中国博士后科学基金
国家自然科学基金重点资助项目(59835170)
