We propose a methodology for the validation of a numerical model of a railway interior with an inline seating layout arrangement, based on the use of multibody and finite element approaches for the analysis of the passive safety. We model the railway interior layout using a nonlinear finite element model of the passenger seats and all supporting structures. Multibody models of test dummies, appropriate to the identification of the injury mechanisms, are used as measuring tools of the human exposure to injury. The crash scenario model uses a crash pulse, which is the surrogate for the impact of the railway vehicle structure. Being the multibody dummy validated independently by the software vendor and the nonlinear finite element structural models built with detailed data, the validation of the complete layout involves the identification of the uncertain parameters used in the scenario construction and not of the parameters used in the independent models already validated. The interaction between the multibody and finite element is represented via a penalty contact force model, which, together with the dummy positioning data, provides the uncertain parameter set used in the validation process. An experimental test of the inline seating layout, carried with a physical prototype, provides the reference dynamic response for the validation of the numerical model. The injury levels measured with the dummies provide the reference injury criteria values used in the validation process. Following the model validation, we discuss the results obtained for the nominal crash scenario in the framework of the most relevant injury indices for railway passenger passive safety.

基于使用多体和有限元方法分析被动安全，我们提出了一种方法，用于验证具有直列式座位布局布置的铁路内部的数值模型。我们使用乘客座椅和所有支撑结构的非线性有限元模型对铁路内部布局进行建模。测试假人的多体模型适用于识别损伤机制，被用作人体暴露于损伤的测量工具。碰撞场景模型使用碰撞脉冲，它是铁路车辆结构影响的替代品。由软件供应商独立验证的多体假人和详细数据构建的非线性有限元结构模型，完整布局的验证涉及确定场景构建中使用的不确定参数，而不是已经验证的独立模型中使用的参数。多体和有限元之间的相互作用通过惩罚接触力模型表示，该模型与虚拟定位数据一起提供了验证过程中使用的不确定参数集。带有物理原型的直列式座椅布局的实验测试为数值模型的验证提供了参考动态响应。用假人测量的伤害水平提供了验证过程中使用的参考伤害标准值。模型验证后，