3D打印速度对成型精度影响的有限元模拟与研究

3D打印技术是区别于传统减材制造的一种加工方法。为提高3D打印件的成型精度,通过有限元分析软件ANSYS,利用其生死单元技术及耦合分析,针对影响成型精度的关键因素之一—打印速度(喷头水平移动的速度),进行打印过程中温度场和应力场的分析。通过计算分析后得出以下结论:在其他条件不变的情况下,随着打印速度的逐步提高,打印件的精度先提高后下降,在打印速度为50mm/s左右时达到最优。该方法为分析其他因素对成型精度的影响提供了一种新方式,为进一步分析多种因素共同作用下得到最佳打印参数提供了思路。

Finite Element Simulation Analysis and Research on the Influence of 3D Printing Speed on Forming Precision

3D printing technology is a kind of processing method which is different from the traditional material cutting. In order to improve the forming precision of 3D prints,through the finite element analysis software ANSYS,using the life and death element technology and coupling,the temperature field and stress field of printing speed—one of the key factors affecting the forming precision—was analyzed. After the calculation and analysis, the following conclusions can be drawn:In the case of other conditions unchanged, with the printing speed of the gradual increase, the accuracy of the print is improved first and then decreased. In the print speed of 50mm/s or so to achieve the best. This method provides a new way to analyze the influence of other factors on the forming accuracy, and provides a new way to get the best print parameters under the combined action of many factors.