BÀI BÁO RÚT LẠI: Mô phỏng sự phát triển của vết nứt bằng phương pháp vết nứt kết hợp

KSCE Journal of Civil Engineering - Tập 14 Số 5 - Trang 765-772 - 2010
Chong, Billy1
1Faculty of Engineering, Wuhan University of Technology, Luojia Hill, Wuhan, China

Tóm tắt

Chúng tôi nghiên cứu về sự nứt không tuyến tính của bê tông thông qua mô hình vết nứt kết hợp rời rạc trong bối cảnh của phương pháp Galerkin không có phần tử (EFG). Bề mặt vết nứt được biểu diễn bằng một số phần tử giao diện thẳng. Định luật cấu tạo của các vết nứt kết hợp được xem xét thông qua việc sử dụng các phần tử giao diện này. Phương trình độ cứng của miền được xây dựng bằng cách trực tiếp đưa vào một hạng tử trong dạng yếu của phương trình hệ toàn cục liên quan đến sự phân tán năng lượng dọc theo các phần tử giao diện. Định luật cấu tạo của các vết nứt kết hợp do đó có thể được xem xét trực tiếp và hiệu quả bằng cách sử dụng hạng tử năng lượng này. Tính hợp lệ và hiệu quả của phương pháp được đề xuất được thảo luận thông qua việc sử dụng một số bài toán.

Từ khóa

#vết nứt #bê tông #phương pháp Galerkin không có phần tử #mô hình vết nứt #năng lượng #độ cứng

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