Modeling, evaluation and prediction of slab track damage and its evolution are nowadays challenge and hot topics, in which the computer modeling program lies a foundation for vehicle-track dynamic analysis subject to slab track damage except the experimental research. In this work, the finite element modeling methods and related computer modules are presented to compile a simulation program to evaluate the slab track damage evolution accompanied by vehicle-track dynamic interaction, where the moving vehicle is modeled as a multi-rigid-body system with the primary and secondary suspensions, and the Bernoulli-Euler beam, thin-plate and solid finite element and spring-dashpots are introduced to model the track system. The fatigue damage constitutive models of the concrete slabs and viscoelastic filling layers, and the interfacial cohesive zone model, are set as the criteria to control and characterize the damage evolution of slab tracks. Apart from model validations, numerical studies are conducted to quantitatively show influence of track irregularities on slab track damage evolution and the slab track damage on vehicle-track system response. It illustrates the necessity of considering the combined fatigue and interfacial damages of slab tracks instead of separately accounting for the fatigue or interfacial damage.

板条轨道损伤及其演化的建模、评估和预测是当今的挑战和热点，其中计算机建模程序是除实验研究外的板条轨道损伤车辆-轨道动力学分析的基础。在这项工作中，提出了有限元建模方法和相关的计算机模块来编写一个仿真程序来评估伴随着车辆-轨道动态相互作用的板条轨道损伤演化，其中移动车辆被建模为一个多刚体系统，具有引入了初级和次级悬架、伯努利-欧拉梁、薄板和实体有限元以及弹簧缓冲器来模拟轨道系统。混凝土板和粘弹性填充层的疲劳损伤本构模型，以及界面黏聚区模型，被设置为控制和表征板条轨道损伤演变的标准。除了模型验证外，还进行了数值研究，以定量显示轨道不平整度对板式轨道损坏演变的影响以及板式轨道损坏对车辆-轨道系统响应的影响。它说明了考虑组合板轨道的疲劳和界面损伤而不是单独考虑疲劳或界面损伤的必要性。