Stereolithography is a process based on the photopolymerization of a UV-reactive system consisting of ceramic particles dispersion in a curable resin. A key issue of this process is the control of the rigidity of green parts, which are strongly related to UV light exposure. This work is focused on the numerical prediction of green part stiffness according to stereolithography manufacturing parameters. A first macroscopic approach, based on the modelling of ceramic suspension polymerization, makes it possible to establish a relationship between the exposure and the Young's modulus. A second microscopic approach, using a periodic homogenization technique based on the strain energy, is applied to a 2D finite element model to evaluate the effective elastic properties. Numerical results show that macroscopic model is able to provide a Young’s modulus with a good level of accuracy. The modelling results from the microscopic model demonstrate an acceptable convergence with the experimental Young’s modulus.

立体光刻法是基于紫外线反应体系的光聚合的方法，该体系由分散在可固化树脂中的陶瓷颗粒组成。此过程的关键问题是控制与紫外线辐射密切相关的生坯的刚度。这项工作专注于根据立体光刻制造参数对生坯零件刚度进行数值预测。根据陶瓷悬浮聚合的模型，第一种宏观方法使建立曝光量和杨氏模量之间的关系成为可能。使用基于应变能的周期性均质化技术的第二种微观方法被应用于二维有限元模型，以评估有效弹性性能。数值结果表明，宏观模型能够提供良好的杨氏模量。微观模型的建模结果表明与实验杨氏模量具有可接受的收敛性。