The material ratio has an important effect on printing performances for 3D cement printing technology, which is studied by uniform design in this paper. The factors required to be taken into account are the proportions of the additives; then, the observed indices are flow properties, geometric distortion, and mechanical properties. By nonlinear regression analysis, relation equations between the above factors and the observed indices are established, which will reveal the main effect and interaction of the factor(s) in detail. Furthermore, the equations can approximately predict printing performances in the future. Finally, the ratio is optimized by multi-objective optimization. The optimal ratio is applied to both experiments and regression equations for comparison afterward. The experimental results show that the optimal ratio can contribute to superior printing performances. The relative error is limited to 16%, which can prove the applicability of regression analysis. The complete process can guide similar research in the future.

中文翻译：

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物料比例对3D水泥打印性能的影响及其优化

物料比对3D水泥打印技术的打印性能有重要影响，本文通过统一设计进行研究。需要考虑的因素是添加剂的比例。然后，观察到的指标是流动性能，几何变形和机械性能。通过非线性回归分析，建立了上述因素与观测指标之间的关系方程，将详细揭示这些因素的主要作用和相互作用。此外，这些方程式可以大致预测未来的打印性能。最后，通过多目标优化对比率进行优化。最佳比率将应用于实验和回归方程式，以便随后进行比较。实验结果表明，最佳比例可以提高印刷性能。相对误差限制在16％以内，可以证明回归分析的适用性。完整的过程可以在将来指导类似的研究。