【摘要】 目的 发展跨大尺度协同大规模建模数值模拟技术，获得复杂结构在运载撞击事故场景中的冲击响应特征，为结构冲击安全性评估提供支撑。方法 针对复杂结构实际几何形状和尺寸，提出包含“车-包装容器-部件”的大尺度协同大规模有限元建模方法，并基于相关方法开展了受包装容器保护的复杂结构在汽车运载撞击、高速列车运载撞击等事故场景中结构响应的数值模拟分析，分析系统整体和关键部件的运动、变形和破坏等特征。结果 数值模拟结果与相关试验结果符合较好，在汽车运载撞击和高速列车运载撞击条件下，系统整体的运动过程及内部结构的变形和破坏情况与试验结果基本一致，验证了相应有限元建模与分析方法的合理性和实用性。结论 所发展的跨大尺度协同大规模有限元建模与分析方法可较好地解决复杂结构冲击响应分析中存在的几何跨尺度、时间跨尺度、多尺度强非线性等方面困难，为复杂结构在运载撞击事故场景中的冲击安全性分析提供有效支撑。更多还原

【Abstract】 The work aims to develop a multi-scale collaboration(MSC) modeling and simulation methods for massive model simulation to obtain the dynamic response characteristics of complex structure in transportation collision accidents,which benefits the safety evaluation of structure under dynamic loading. A finite element model including transportation vehicle, packaging container and complex structure was built by the developed multi-scale collaboration modeling method according to the actual shape and size of structures. Based on the developed method, numeric simulations were conducted on complex structure protected by packaging containers in truck collision accident and high speed train collision accident.The motion, deformation and damage characteristics of the overall system and key components were analyzed. Numerical simulation results, such as the motion process of the overall system as well as the deformation and damage of the inner structure, were in good agreement with experimental results both in truck and high speed train collision accidents,verifying the accuracy and practicality of the finite element modeling and analysis method. The developed multi-scale collaboration modeling method effectively addresses challenges in complex structure impact response analysis, including multi-geometry-scale, multi-time-scale and multi-scale nonlinear complexities and provides effective support to the analysis of the dynamic safety of complex structure in transportation collision accidents.更多还原