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Phương pháp phần tử hữu hạn tổng quát cho các vết nứt ba chiều trong vật liệu composit gia cố bằng sợi
Tóm tắt
Bài báo này trình bày một phương pháp phân tích các vết nứt tĩnh ba chiều trong các vật liệu gia cố bằng sợi. Các sợi được mô hình hóa rời rạc sử dụng một biến thể của phương pháp gia cố nhúng với trượt liên kết (mERS) cho phép kết hợp với phương pháp phần tử hữu hạn tổng quát (GFEM) cho các vết nứt ba chiều. Do lưới GFEM không cần phải phù hợp với bề mặt vết nứt hoặc sợi, GFEM-mERS có thể xử lý các sợi nối qua các mặt vết nứt ở các góc tùy ý. Phương pháp này được xác minh với các nghiệm pháp FEM ba chiều sử dụng phân rã phù hợp cho bề mặt vết nứt và biên giới sợi. So sánh giữa phương pháp và dữ liệu thực nghiệm cũng như các nghiên cứu hội tụ của phiên bản h- và p-phương pháp cũng được trình bày.
Từ khóa
#vết nứt ba chiều #phương pháp phần tử hữu hạn #vật liệu gia cố bằng sợi #phương pháp gia cố nhúng với trượt liên kết #phân rã phù hợpTài liệu tham khảo
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