Numerical simulation study on shrinkage deformation of ceramic photocuring additive manufacturing process

Shrinkage deformation during the curing stage of ceramic vat photopolymerization significantly affects product dimensions and forming quality, making accurate prediction and analysis of shrinkage deformation critical in this stage. In this study, a temperature equivalent method based on birth and death elements technology is proposed to achieve efficient and accurate prediction of curing shrinkage deformation. By simplifying the input parameters of the finite element model, this method generates a series of equivalent temperature gradients to calculate the distribution of deformation and stress fields during the curing stage. To validate the accuracy of this method, calculation results were compared with reference data, and additional printing experiments were conducted on various structural parts. Experimental results closely matched model predictions, supporting the method's reliability. This method provides theoretical support for enhancing precision control in the additive manufacturing process.