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提出一种以承载效率最高作为目标的新设计方法,对复合材料加筋板的承载能力进行优化。讨论了不同压缩与弯曲刚度的匹配模式与加筋板临界失稳载荷的关系。将全局失稳载荷、局部失稳载荷与静载荷的接近程度作为结构承载效率的量化标准,通过静载荷的控制,使结构的稳定性向着效率最高的方向优化。以宏观的加筋板压缩与弯曲刚度参数作为设计变量,构建了一种可用于结构效率优化的代理模型,避免了局部最优点的出现,更便于数值寻优。通过有限元分析验证,优化后壁板的临界失稳载荷与所施加的静载荷基本一致,反映出较高的效率,从而验证了该方法的可靠性。
A new design method aiming at the highest bearing efficiency is proposed, and the bearing capacity of the composite stiffener is optimized. The relationship between different compression and bending stiffness matching modes and the critical buckling load of stiffened plate is discussed. The global stability of the load, the local stability of the load and static load close to the load capacity of the structure as a quantitative standard, through the static load control, so that the stability of the structure toward the most efficient direction optimization. Taking macro compression and bending stiffness parameters of stiffened plates as design variables, a proxy model that can be used to optimize the structure efficiency is constructed, which avoids the appearance of local optimum points and facilitates numerical optimization. The finite element analysis shows that the critical load of the optimized siding is basically consistent with the applied static load, which reflects the higher efficiency and verifies the reliability of the method.