An efficient computational strategy has been developed for modeling additively manufactured cement-based materials which captures the dynamics of 2D slices at a stationary location along a print path, i.e. 2-D stationary computation printing (2D-SCP). Flow rheometry was used to experimentally establish the fluid properties of cement pastes of various water contents and to calibrate the computational model. The model was validated using mini conical slump flow tests. A hollow cylinder geometry was used as a benchmark for printed objects. Deformations and rates of deformation for the free-surface flow were then simulated for like 2-D geometries. The relative importance of yield stress and structuration rates were quantified by comparing the 2D-SCP model outcomes with cut cross-sections of the 3D printed cylinders. Good agreement between printed objects and model outcomes were found in all cases. Quantification of print fidelity shows that 2D-SCP is a strong predictor of actual printed object outcomes.

已经开发了一种有效的计算策略，用于对增材制造的水泥基材料进行建模，该策略在打印路径上的固定位置捕获二维切片的动态，即二维固定计算打印 (2D-SCP)。流变仪用于实验建立不同含水量水泥浆体的流体特性并校准计算模型。该模型使用迷你锥形坍落度流动测试进行了验证。空心圆柱体几何形状被用作打印对象的基准。然后模拟二维几何形状的自由表面流动的变形和变形率。通过将 2D-SCP 模型结果与 3D 打印圆柱体的切割横截面进行比较，量化了屈服应力和结构化速率的相对重要性。在所有情况下都发现打印对象和模型结果之间的一致性很好。打印保真度的量化表明 2D-SCP 是实际打印对象结果的强预测器。