Fused deposition molding (FDM) is one of the most widely used three‐dimensional (3D) printing technologies. This paper explores the influence of the forming angle on the tensile properties of FDM specimens. Orthogonal layering details were studied through experiments, theory, and finite element simulations. The stiffness and strength of the specimens were analyzed using the classical laminated plate theory and the Tsai–Wu failure criterion. The experimental process was simulated using finite element simulations. Results show that it is feasible to predict the stiffness and strength of FDM specimens using classical laminated plate theory and the Tsai–Wu failure criterion. A molding angle of 45° leads to specimens with maximized tensile properties. Numerical simulations show that changing the molding angle changes the internal stress and deformation fields inside samples, leading to FDM samples with different mechanical properties due to the orthogonal layers at different molding angles.

中文翻译：

---

成型角度对正交分层FDM零件拉伸性能的影响

熔融沉积成型（FDM）是最广泛使用的三维（3D）打印技术之一。本文探讨了成形角度对FDM试样拉伸性能的影响。通过实验，理论和有限元模拟研究了正交分层的细节。使用经典的叠层板理论和蔡-吴破坏准则对样品的刚度和强度进行了分析。使用有限元模拟对实验过程进行了模拟。结果表明，使用经典层压板理论和Tsai-Wu破坏准则来预测FDM试样的刚度和强度是可行的。45°的成型角使样品具有最大的拉伸性能。