In this paper,"elliptical runway"prototypes were prepared by 3D printing technology to study the effects of different fiber angles and fiber layer distributions on the mechanical properties of the prototypes,and the fracture modes in various mechanical tests were tested experimentally.Then,the topology of the three-point bending beam,C-clamp and cartridge cantilever was optimized based on the topology optimization theory of variable density,and verified by mechanical performance tests.The results show that anisotropic mechanical properties are observed in all mechanical tests,in which the fiber direction has the highest strength and stiffness,while the spanwise direction has lower strength and stiffness.The topologically optimized continuous carbon fiber 3D-printed bullet rack cantilever structure can withstand extreme operating conditions through finite element analysis and compression testing.
关键词
弹架悬臂/拓扑优化/连续碳纤维/3D打印/变密度法
Key words
bullet rack cantilever/topology optimization/continuous carbon fiber/3D printing/variable density method
维普
万方数据