The finite element (FE) simulation of industrial size composite structures under crush loading is a challenging task. Currently, the vast majority of these simulations employ non-physical “tweaking” parameters that are undesirable and limit the confidence in their predictive capabilities. This paper investigates three different material models based on continuum damage mechanics (CDM) within two commercial FE software packages, ABAQUS/EXPLICIT and LS-DYNA, to identify FE-code and material model-independent capabilities, limitations and challenges of physically-based axial crush simulation of composite structures without the use of non-physical parameters for model calibration. In particular, we show that the commonly applied crack band scaling in CDM-based material models is not suitable for the simulation of axial crushing where the dominant mode of failure is fragmentation.

在挤压载荷下对工业尺寸复合结构进行有限元 (FE) 模拟是一项具有挑战性的任务。目前，绝大多数这些模拟采用非物理“调整”参数，这些参数是不受欢迎的，并限制了对其预测能力的信心。本文在两个商业 FE 软件包 ABAQUS/EXPLICIT 和 LS-DYNA 中研究了基于连续损伤力学 (CDM) 的三种不同材料模型，以确定基于物理的轴向的有限元代码和材料模型独立能力、局限性和挑战。复合结构的挤压模拟，无需使用非物理参数进行模型校准。特别是，