1.江苏理工学院机械工程学院，江苏常州 213001； 2.金陵科技学院机电工程学院，南京 211100； 3.同济大学汽车学院，上海 201800
Strength Prediction and Analysis of Short Fiber Reinforced Composites based on 3D Printing
Li Lingyan1, Zhou Jinyu2, Ma Xinyuan3
1. College of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China; 2. College of Mechanical and Electrical Engineering, Jinling Institute of Technology, Nanjing 211100, China; 3. School of Automotive Studies, Tongji University, Shanghai 201800, China
Abstract：Aiming at the fact that the strength of short fiber reinforced resin matrix composites is still mainly based on experiment and two-dimensional plane prediction, a strength prediction model of three-dimensional short fiber reinforced composites which can truly reflect the fiber spatial structure was proposed. Based on the probability method, the modified "mixing law model" was used to deduce the detailed theoretical formula of the effect of fibers in the critical region, and the strength prediction model of three-dimensional short fiber reinforced composites based on fiber orientation, length and volume fraction was established. Taking short carbon fiber reinforced nylon composites as example, strength theoretical prediction, Abaqus finite element simulation analysis and tensile experiment were carried out. The results show that the theoretical prediction value is closer to the experimental value than the simulation value, and the error with the experimental value is within 10%, the error is small and the results are in good agreement. It shows that the strength prediction model of three-dimensional short fiber reinforced composites is accurate and reasonable. Scientific and accurate strength prediction of three-dimensional short fiber reinforced composites can provide a theoretical basis for the design and manufacture of three-dimensional prints of short fiber reinforced composites.
Keywords：short fiber reinforced composite; strength; prediction; 3D printing
Li Lingyan，Zhou Jinyu，Ma Xinyuan. Strength prediction and analysis of short fiber reinforced composites based on 3D printing[J].Engineering Plastics Application，2022，50(1)：109-115.