高速履带车辆作为一种复杂的承载系统，不仅要具备一定的防护能力，还要能承受各种激励源的作用。随着车体轻量化设计要求的产生，对该类高速履带车辆的设计研究逐渐深入。车体的模态分析关乎车体的可靠性设计。然而，目前关于轻量化高速履带车辆模态特性的研究主要基于试验方法，该方法无法针对不同应用工况条件下车体的动力学响应展开大量研究。基于有限元方法对某轻量化高速履带车辆白车体模型进行了模态计算及分析，结合试验模态测试结果对车体模型进行了修正，并针对车体的优化设计提出了建议。该白车体修正模型及模态特性有助于学者分析相关车辆结构设计的合理性，从而避免车辆行进过程中发生共振。同时，该研究成果有望应用于不同工况条件下车体的动力学特性分析，并对轻量化高速履带车辆的设计及改造提供参考和指导。

As a complex load-bearing system, high-speed tracked vehicles not only need to have certain protective capabilities, but also need to be able to withstand the effects of various excitation sources. With the emergence of lightweight design requirements for vehicle bodies, research on the design of such high-speed tracked vehicles is gradually deepening. The modal analysis of vehicles is related to the reliability design of the vehicle bodies. However, current research on the modal characteristics of lightweight high-speed tracked vehicles is mainly based on experimental methods, which cannot conduct extensive research on the dynamic response of vehicle bodies under different application conditions. Modal calculation and analysis were conducted on the vehicle body model of a lightweight high-speed tracked vehicle based on the finite element method, and the model was modified combined the experimental modal test results. And, the suggestions were made for optimizing the design of the vehicle body. The modified vehicle body model and modal characteristics were contributed scholars to analyze the rationality of relevant vehicle structural design, thereby avoiding resonance during vehicle movement. Moreover, the research results are expected to be applied to analyze the dynamic characteristics of the vehicles under different working conditions, and provide reference and guidance for the design and modification of the lightweight high-speed tracked vehicles.