针对复铰式100%低地板车辆强度校核复杂,设计反馈周期长的问题,首先提出了模块分离和接口力的概念,根据车体模块、铰接件、转向架受力的特点,建立了车体在给定工况下的平衡方程,计算得到车体各模块之间以及车体与转向架之间的接口力数值.基于该方法计算了车钩压缩工况下拖车模块的结构强度;从模型处理与计算规模、计算结果和计算效率三个方面,将单模块计算法与整车有限元计算法进行了对比.结果表明,单模块法大大简化了有限元模型,且应力分布与数值几乎一致,由于计算规模仅为整车有限元法的1/5,在不影响计算精度的情况下,其计算效率有了极大的提高,该方法可很好地用于车辆结构的前期设计以及后期的强度校核.
For the problem of 100% low-floor vehicles complex strength design and long time of feedback;first, it proposed the concept of the separation module and interface force, and then, according to the characteristics of the module and the articulation bogie force, it establishes the body balance equations. Finally, using this method to calculate the structural strength of the trailer coupler conditions compression comparing with model of vehicle it verifies the feasibility of a single module method.