In this study, 3D-printed structures under compressive loads were investigated. In order to develop a fully functional simulation solution, the mechanical characterization of acrylonitrile butadiene styrene (ABS) was performed. Samples for the tensile and compression test were manufactured and tested for a complex tension–compression behavioral analysis of the material. The finite element failure mechanism implemented is based on the strain at failure vs. triaxiality. Thus, to define the set of parameters required by the Generalized Incremental Stress-State-dependent MOdel (GISSMO) implemented in LS-DYNA, specialized samples were manufactured and tested. The material was validated on simple, single-element, and complex models considering the geometrical specifications of the samples used in the tests. A set of 3D structures with lattice, honeycomb, and rectangular patterns were manufactured with the same parameters as those used to build the samples for material characterization. Compression tests were performed and subsequently investigated by numerical analysis. Considering the peak load, the differences obtained between the test and the simulation ranged from 3% to $6.5\text{\%}$. The numerical models with this material implemented are capable of predicting the collapse mode of the structures and, referring to this work, provide a reasonable estimation of the behavior under compressive loads.

在这项研究中，研究了在压缩载荷下的3D打印结构。为了开发功能齐全的仿真解决方案，对丙烯腈丁二烯苯乙烯（ABS）进行了机械表征。制造了用于拉伸和压缩测试的样品，并对材料进行了复杂的拉伸-压缩行为分析。实施的有限元破坏机制是基于破坏时的应变与三轴性的关系。因此，为了定义在LS-DYNA中实施的广义增量应力状态相关模型（GISSMO）所需的参数集，需要制造和测试专用样品。考虑到用于测试的样品的几何规格，在简单，单元素和复杂的模型上对材料进行了验证。一组带有格子，蜂窝，矩形图案的制造参数与用于构建材料表征样品的参数相同。进行压缩测试，随后通过数值分析进行研究。考虑到峰值负载，测试和模拟之间的差异范围为3％至$6。5\text{％}$。实施这种材料的数值模型能够预测结构的塌陷模式，并参考这项工作，可以对压缩载荷下的行为提供合理的估计。