A numerical analysis is validated against a Swiss Federal Commission for Technology and Innovation (CTI)—frame impact experiment conducted by the Swiss Company Geobrugg. The discrete element method is used to simulate the impacting object, while the highly nonlinear structural response is analysed with the finite element method. Both methods are coupled within an open-source multi-physics research code to exchange data and simulate the interaction. The successful practical application of the coupling algorithm is demonstrated with this work, as the numerical results show good agreement with the experimental results. Within this paper the main focus is the appropriate modelling of the impacting objects, which heavily influences the simulation results, while a simplified structural model allows a correct assessment of the global deformation behaviour and reaction forces.

数值分析已通过瑞士联邦技术与创新委员会（CTI）进行了验证-由瑞士公司Geobrugg进行的框架碰撞试验。离散元法被用来模拟撞击物体，而高度非线性的结构响应被有限元法分析。两种方法都结合在一个开源的多物理研究代码中，以交换数据并模拟相互作用。数值结果与实验结果吻合良好，证明了耦合算法的成功实际应用。在本文中，主要重点是对撞击对象进行适当的建模，这会严重影响模拟结果，