梭式皮带布料机作为一种新型混凝土浇筑机械，在水电工程施工等领域已被广泛应用。利用有限元软件ANSYS建立梭式皮带布料机的整体有限元模型，通过模拟正常工况，进行预应力模态分析及谐响应分析，获得前8阶固有频率，并发现第2阶模态频率对其动态性能影响最大。因此，提取第2阶模态频率作为多目标优化设计的其中一个目标函数，为布料机结构的后续优化设计奠定基础。

The shuttle-type belt conveyer, as a new type of concrete machine, has been widely used in the pouring hydropower construction and other fields. The finite element model for analyzing the overall structure of shuttle-type belt conveyer was established using ANSYS. The load the shuttle-type belt conveyer suffered under the normal conditions was simulated, and the prestressed modal study and harmonic analysis were performed. The natural frequencies for the first 8-order modals were obtained, and the second modal frequency had the greatest impact on the dynamic performance of shuttle-type belt conveyer. Therefore, the second modal frequency was extracted as an objective function in the multi-objective optimization design, which can lay the foundation for the subsequent optimization design of shuttle -type belt conveyer structure.