Abstract
ABSTRACT Given the current situation that the evaluation system of the deformation and instability failure of 3DPC is immature, this study was devoted to shaping the performance of 3DPC to provide new ideas and ways for exploring the stable forming of 3DPC. The relationship between the deformation in different directions and the number of layers was analysed. The deformation regulation of 3DPC was revealed, and the controllable index was determined. Results show that the vertical and horizontal deformation in the plastic state is correlated to evaluate the overall deformation by considering only the lateral deformation. The horizontal and vertical deformation of each layer decreases as the number of layers increases, forming a trapezoidal shape. The relationship between the horizontal deformation and the number of layers varies with the shape of the printed component. This relationship follows a linear pattern in the vertical direction and remains independent of the printing shape. The deformation process of 3DPC can be divided into three stages: linear deformation, elastoplastic, and plastic failure. The elastoplastic stage is identified as the primary stage, and the horizontal deformation begins here. Comparatively, the horizontal strain is more suitable for evaluating the plasticity of 3DPC than the vertical strain.
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