With the evolution of three-dimensional (3D) printing, many restrictive factors of 3D printing have been explored to upgrade the feasibility of 3D printing technology, such as nozzle structure, print resolution, cell viability, etc., which has attracted extensive attention due to its possibility of curing disease in tissue engineering and organ regeneration. In this paper, we have developed a novel nozzle for 3D printing, numerical simulation, and finite element analysis have been used to optimize the nozzle structure and further clarified the influence of nozzle structure parameters on material controllability. Using novel nozzle structure, we firstly adopt ANSYS-FLUENT to analyze material controllability under the different inner cavity diameter, outer cavity diameter and lead length. Secondly, the orthogonal experiments with the novel nozzle are carried out in order to verify the influence law of inner cavity diameter, outer cavity diameter, and lead length under all sorts of conditions. The experiment results show that the material P diameter can be controlled by changing the parameters. The influence degree of parameters on material P diameter is shown that lead length > inner cavity diameter > outer cavity diameter. Finally, the optimized parameters of nozzle structure have been adjusted to estimate the material P diameter in 3D printing.

中文翻译：

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喷嘴结构参数对材料可控性影响的仿真分析。

随着三维（3D）打印技术的发展，人们探索了许多3D打印技术的制约因素，以提升3D打印技术的可行性，例如喷嘴结构，打印分辨率，电池寿命等，因此受到了广泛的关注。可以治愈组织工程和器官再生中的疾病。在本文中，我们开发了一种用于3D打印的新型喷嘴，数值模拟和有限元分析已用于优化喷嘴结构，并进一步阐明了喷嘴结构参数对材料可控性的影响。我们首先采用新颖的喷嘴结构，采用ANSYS-FLUENT分析不同内腔直径，外腔直径和引线长度下的材料可控性。其次，为了验证各种条件下内腔直径，外腔直径和引线长度的影响规律，进行了新型喷嘴的正交试验。实验结果表明材料可以通过更改参数来控制P直径。参数对材料P直径的影响程度显示为引线长度>内腔直径>外腔直径。最后，调整喷嘴结构的优化参数以估计3D打印中的材料P直径。