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Nghiên cứu thực nghiệm và mô hình hóa hành vi tribological tạm thời của chất bôi trơn hai pha dưới các điều kiện tải phức tạp
Tóm tắt
Hiện tượng tribological tạm thời và sự phân hủy chất bôi trơn sớm đã được quan sát rộng rãi trong quá trình định hình kim loại, dẫn đến ma sát quá mức tại các giao diện tiếp xúc. Trong nghiên cứu này, hành vi tribological tạm thời của một chất bôi trơn hai pha đã được nghiên cứu dưới các điều kiện tải phức tạp, với những biến đổi đột ngột về nhiệt độ giao diện, tải trọng tiếp xúc và tốc độ trượt, do đó mô tả các điều kiện giao diện nghiêm trọng quan sát được trong các ứng dụng định hình kim loại ấm/nóng. Bằng chứng thực nghiệm mạnh mẽ chỉ ra rằng sự phát triển của ma sát được quy cho các hiệu ứng giảm bớt về mặt vật lý và phân hủy hóa học. Do đó, một mô hình ma sát tương tác visco-mechanochemical đã được phát triển để dự đoán chính xác hành vi tribological tạm thời của chất bôi trơn hai pha dưới các điều kiện tải phức tạp. Mô hình ma sát mới thể hiện sự phù hợp gần gũi giữa kết quả mô hình hóa và kết quả thí nghiệm.
Từ khóa
#Tribology #chất bôi trơn hai pha #ma sát #điều kiện tải phức tạp #định hình kim loạiTài liệu tham khảo
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