連結装置の塑性を考慮した編成鉄道車両の大変位挙動解析

概要

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Recently, many researches about vehicle dynamics analysis under unusual condition like derailment and impact to an obstacle are increasing. In this paper, the behavior of train buckling when large coupler force, large displacement and plastic deformation of a coupler occur is clarified. First, in order to analyze the behavior of the coupler in large displacement, the model by finite element method (FEM) is built and analysis is conducted. Farther, impact test using real coupler to validate FEM model is conducted. Next, the hybrid train set model consisted of the FEM coupler model and a multi body dynamics (MBD) car model is build. This hybrid model constructed focusing to that coupler is connected to the car body only by contact and independent structurally. Finally, the theoretic buckling model in consideration of dynamics is shown. Using the theoretic model and the hybrid model, effects of dynamics and initial condition is verified in detail.