Krupnin Arthur E, Zakirov Arthur R, Sedush Nikita G, Alexanyan Mark M, Aganesov Alexander G, Chvalun Sergei N
National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
Department of Applied Mechanics (RK-5), Faculty of Robotics and Complex Automation, Bauman Moscow State Technical University, 105005 Moscow, Russia.
Materials (Basel). 2023 Nov 19;16(22):7229. doi: 10.3390/ma16227229.
The purpose of this work is to theoretically and experimentally investigate the applicability of the Tsai-Hill failure criterion and classical laminate theory for predicting the strength and stiffness of 3D-printed polylactide laminate composites with various raster angles in mechanical tests for uniaxial tension and compression. According to the results of tensile and compression tests, the stiffness matrix components of the orthotropic individual lamina and strength were determined. The Poisson's ratio was determined using the digital image correlation method. It was found that the Tsai-Hill criterion is applicable for predicting the tensile strength and yield strength of laminate polymer composite materials manufactured via fused deposition modeling 3D printing. The calculated values of the elastic moduli for specimens with various raster angles correlate well with the values obtained experimentally. In tensile tests, the error for the laminate with a constant raster angle was 3.3%, for a composite laminate it was 4.4, in compression tests it was 11.9% and 9%, respectively.
这项工作的目的是从理论和实验两方面研究蔡-希尔失效准则和经典层合板理论在预测具有不同光栅角度的3D打印聚丙交酯层合复合材料在单轴拉伸和压缩力学试验中的强度和刚度方面的适用性。根据拉伸和压缩试验结果，确定了正交各向异性单层板的刚度矩阵分量和强度。泊松比采用数字图像相关法测定。结果表明，蔡-希尔准则适用于预测通过熔融沉积建模3D打印制造的层合聚合物复合材料的拉伸强度和屈服强度。不同光栅角度试样的弹性模量计算值与实验值相关性良好。在拉伸试验中，光栅角度恒定的层合板误差为3.3%，复合层合板误差为4.4%，在压缩试验中，误差分别为11.9%和9%。
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