In this study, the effects of the single and multiple productions of samples by additive manufacturing on residual stress and displacement (distortions) were investigated. The samples were manufactured by Selective Laser Melting (SLM) machine using Ti6Al4V powders. Each time a different number (1, 5 and 13 samples) of cubic shaped samples were produced on the building platform. During the process, samples were observed with a thermal camera first, in order to understand the relationship amongst the residual stress, displacement and temperature gradients. Then, displacement values were measured experimentally with Coordinate Measurement Machine (CMM) device. Next, both displacement and residual stresses were calculated via Finite Element Analysis (FEA) method. Finally, residual stresses and displacement equations were determined by genetic expressional programming (GEP) using the results and data obtained from the tests and FEA. According to the results, the regression values of residual stress and displacement equation were found to be 0.96% and 0.88%, respectively. As the number of manufactured samples on the same platform increased, temperatures and irregular temperature distribution were increased.

在这项研究中，研究了通过增材制造一次和多次生产样品对残余应力和位移（变形）的影响。样品通过使用Ti6Al4V粉末的选择性激光熔融（SLM）机制造。每次在建筑平台上生产不同数量（1、5和13个样品）的立方样品。在此过程中，首先用热像仪观察样品，以了解残余应力，位移和温度梯度之间的关系。然后，使用坐标测量机（CMM）设备通过实验测量位移值。接下来，通过有限元分析（FEA）方法计算位移应力和残余应力。最后，残余应力和位移方程是通过基因表达编程（GEP）使用测试和有限元分析获得的结果和数据确定的。根据结果​​，残余应力和位移方程的回归值分别为0.96％和0.88％。随着同一平台上制造样品的数量增加，温度和不规则温度分布也增加。