论文部分内容阅读
将玻璃钢闸门抽象为一矩形层合板,具有多种约束(两侧边铰支、顶边自由及底边夹钳约束),运用强度理论和刚度条件计算横向液压承载能力,对于讨论复合材料层合板具有普遍意义。我们先用解析法解,着重解决对于层合板在自由边缘建立由弹性挠曲面方程表达的边界条件;并用能量法解进行对照,相互验证,结果有良好的一致性(例如用两种方法计算闸门的最大挠度,偏差不大于3.3％)。 对于层合板(玻璃钢闸门)较薄的情况,刚度起决定作用,给定铺层比,不论改变原设计厚度或作新的设计,我们认为用能量法的挠曲方程选择板厚较方便实用。
The FRP gate is abstracted as a rectangular laminate with various constraints (two side hinges, free top side and bottom side clamp constraints). The transverse hydraulic bearing capacity is calculated using the strength theory and the stiffness conditions. For the discussion of composite laminates It has universal significance. We first use analytic solution, focusing on solving the boundary conditions for elastic laminate surface expression at the free edge of the laminate; compare them with the energy method solution and verify each other that the results are in good agreement (for example, using two methods to calculate the gate The maximum deflection, the deviation is not more than 3.3%). Stiffness plays a decisive role in the case of thinner laminate (FRP) gates. Given the variation of the original design thickness or the new design, given the lay-up ratio, it is more convenient and practical to select the plate thickness by the deflection method of the energy method.