子结构方法在汽车侧面碰撞仿真中的应用

Application of sub-structure method for automotive side impact simulations

子结构方法是进行汽车侧面碰撞约束系统优化设计的重要手段。该文分析了利用子结构方法进行侧面碰撞约束系统优化设计的流程,采用PAM-CRASH软件建立了整车侧面碰撞仿真模型和子结构仿真计算有限元模型,对约束系统结构参数变化后整车模型和子结构模型的计算结果进行了对比分析。结果表明:子结构模型适用于对填充材料、车门内饰板、车门外形等进行优化分析。该研究对于侧面碰撞仿真中子结构方法的应用具有参考价值。

The sub-structure method plays an important role in occupant restraint system optimization design in automotive side impact. This paper analyzed restraint system optimization using the sub-structure method for side impacts. The finite element model for the entire vehicle and the sub-structure for the side impact were developed using the software PAM-CRASH. Analysis of the predicted dummy responses of the entire vehicle and the sub-structure model with different occupant restraint system parameters shows that the sub-structure method is suitable for optimization of the bolster, door trim, and door shapes. This study provides a reference for the application of the sub-structure method for side impact simulations.