Bài viết trình bày mô phỏng sự lan truyền vết nứt trong kết cấu nhiều pha vật liệu bằng phương pháp phase field có xét tới hư hỏng mặt phân giới giữa các pha; Xây dựng một hàm con bổ sung xử lý các định dạng ảnh của kết cấu với mỗi màu đại diện cho một pha vật liệu, dựa trên nguyên lý một màu sẽ có một dải số đại diện để xác định hình dạng mặt phân giới. | Transport and Communications Science Journal Vol 72 Issue 8 10 2021 893-907 Transport and Communications Science Journal MODELING OF CRACK PROPAGATION IN MULTI-PHASE STRUCTURE BY PHASE FIELD METHOD WITH INTERFACIAL DAMAGE Vu Ba Thanh Tran Anh Tuan Nguyen Dinh Hai University of Transport and Communications No 3 Cau Giay Street Hanoi Vietnam ARTICLE INFO TYPE Research Article Received 16 07 2021 Revised 27 09 2021 Accepted 01 10 2021 Published online 15 10 2021 https Corresponding author Email thanhvb@ Abstract. In recent years the phase field method has become a reliable and effective simulation tool to predict the damage in structures containing construction materials. In multi- phase structures the interface shape between material phases is often very complex and random which makes it difficult to determine the boundaries of these phases leading to inaccurate simulation results. Therefore the objectives of this paper i use the phase field method to simulate the crack initiation and propagation in structures containing component multi-phase with the interaction between the bulk damage in the interior of these phases described by the phase field variable d and the interfacial damage represented by a supplemental fixed scalar phase field variable ii build a supplemental sub-function to handle image formats of structure with each color representing a material phase based on the principle that one color of image will have a representative range of numbers to determine the interface shape. The obtained results in this paper show that the current phase field method combined with the supplemental sub-function can accurately simulate the damage of structures containing component multi-phase. Keywords phase field method crack supplemental sub-function multi-phase structure interfacial damage. 2021 University of Transport and Communications 893 Tạp chí Khoa học Giao thông vận tải Tập 72 Số 8 10 2021 893-907 Tạp chí Khoa học Giao thông
