KHẢO SÁT VỀ ĐỘ CỨNG KẾT CẤU CỦA KHUNG IN 3D SỬ DỤNG SỢI CARBON LIÊN TỤC

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Tác giả: Tiến Đạt Hoàng

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2024

Mô tả vật lý: tr.295 - 301

Bộ sưu tập: Metadata

ID: 462606

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In this paper, the effect of continuous carbon fibers (CCF) on the stiffness of 3D printed frames is investigated. Fused deposition modelling (FDM) technology is employed to build three typical frames with 15% of CCF and 85% poliamide 12 which is combined 10% short carbon fibers (PA12-CF) for compress testing. The 3D models of the frames including grid (-450/+450), triangle (-600/+600) and grid (0/900) made by CCF lattices are designed based on slicing parameters and simulated in Abaqus before conducting experiment. An MTS–45 system (USA) is used for compression testing to obtain the stiffnesses and peak loads of the models. The effect of different CCF lattices on the stiffness of the printed models is pointed out. Finally, the comparison between simulation and experiment results are also discussed. It shows that two results are quite close together. This investigation is worth in the extension of CCF printing application.Trong bài báo này, ảnh hưởng của sợi carbon liên tục (CCF) tới độ cứng của khung in 3D được khảo sát. Công nghệ đùn mẫu chảy (FDM) được sử dụng để chế tạo 3 mô hình khung đặc trưng sử dụng 15% CCF và 85% vật liệu polymer PA12 đã được pha trộn thêm 10% sợi carbon cắt ngắn (PA12-CCF) phục vụ quá trình khảo sát nén. Mô hình in 3D của 3 khung CCF bao gồm cấu trúc lưới nghiêng (-450/+450) cấu trúc tam giác (-600/+600), cấu trúc lưới (00/900) cũng được thiết kế dựa theo các thông số hình học sau khi cắt lớp và sử dụng cho quá trình mô phỏng bằng phần mềm Abaqus trước khi thí nghiệm. Hệ thống máy kéo nén MTS-45 của Mỹ được sử dụng cho quá trình nén để đo được độ cứng và lực tới hạn của 3 mẫu. Cuối cùng, các kết quả mô phỏng và thí nghiệm được phân tích, so sánh với nhau và cho thấy khá trùng khớp. Khảo sát này rất hữu ích trong quá trình mở rộng ứng dụng của công nghệ in 3D sử dụng sợi carbon liên tục.

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