A novel finite element-based simulation method is proposed for fused deposition modeling in two dimensions. The method assumes full coupling between the mechanical and thermal response under the assumptions of infinitesimal deformation and finite temperature variation. To account for continuous temperature-induced changes in the geometry, new elements are deposited on the current configuration, while the governing equations are solved on a reference configuration generated based on the desired shape. Representative simulations are conducted to assess the predictive capacity of the method, as well as the effect of thermomechanical coupling on the final shape of the printed solid.

提出了一种新的基于有限元的模拟方法，用于二维熔融沉积建模。在无限小的变形和有限温度变化的假设下，该方法假设机械响应和热响应之间完全耦合。为了解决几何结构中由温度引起的连续变化，新元素沉积在当前配置上，而控制方程在基于所需形状生成的参考配置上求解。进行有代表性的模拟以评估该方法的预测能力，以及热机械耦合对印刷固体最终形状的影响。