针对开环条件下液压多路阀结构拓扑需满足多种工况下性能复合的流固耦合设计难题，本文提出了面向多路阀结构拓扑设计的多工况综合性能评价方法。论文以液压挖掘机多路阀回转联为对象，将阀芯换向过渡过程分为微动、比例调速以及全开口节流三个开启区段。设定其阀芯节流槽结构参数为变量，分别以三个开启区段的性能为评价目标，构建了面向多路阀结构拓扑设计的多工况综合性能评价的多目标优化设计模型。在验证多路阀CFD仿真结果与其台架实验结果基本一致的基础上，对上述优化模型计算结果进行仿真，结果表明，优化所得结构拓扑形态对应的稳态综合性能得到明显改善，说明本方法对于此类复杂工况条件下多路阀结构拓扑设计问题具有参考价值。

Aiming at the problem of fluid - solid coupling topology design for the groove structure under the condition of open - loop condition which needs to meet the performance requirements in a variety of operating conditions, the article proposed a comprehensive performance evaluation method for multi - way valve topology design of the groove structure. In this paper, the hydraulic excavator swing-valve is the object, the spool reversal process is divided into fretting, proportional speed control and full opening sections. The paper set the topology of the groove structure parameter as the design variable and set the performance evaluations of the three opening sections as a goal, finally constructed the topology optimized design model of the groove structure for the comprehensive performance evaluation of multi – way valve which needs to meet the performance requirements in a variety of operating conditions. After verifying that the CFD simulation results of the multi-way valve are basically consistent with its experimental results, the simulation results of the above optimization model are simulated. The results show that the steady state comprehensive performance corresponding to the topology of the optimized structure is significantly improved, which indicates that the proposed method is effective for the topology design of multi - way structure which needs to meet the complex conditions and has the reference value.