广蓄B厂尾水闸门三维有限元分析

针对广蓄B厂尾水平面闸门，建立了以板壳单元为主的有限元模型，采用NASTRAN软件计算了闸门的应力和变形，根据规范校核了闸门的强度和刚度，并验证了工程算法计算主梁弯、剪应力是有效的，而计算位移及复杂部位应力则有局限性。应用“虚拟流体质量法”分析了水体对闸门自振特性的影响，结果显示流固耦合作用不容忽视且不同振型受影响程度不同，另外增加约束可以提高闸门抗振性能。

3D-FEM Analysis of Guangzhou PSPS Plant B’s Tail Gate

Based on the tail plane gate of Guangzhou pumped storage power station plant B, a finite element model is built mainly using shell elements. The software NASTRAN is applied to calculate the stress and deformation of the gate. The intensity and stiffness of the gate is checked according to the standard, and it is demonstrated that, when using engineering algorithm, the calculation of main beam’s buckling and shearing stress is effective but the calculation of deformation and stress at complicated positions is limitative. The virtual fluid mass method is introduced to analyze the gate’s natural-vibration characteristics which are influenced with water. The result illustrates that the effect of fluid-solid coupling can’t be neglected and different mode shapes have different degree of impact. In addition, the anti-vibration can be strengthened through adding more constraints to the gate.