Tối ưu hóa hệ kết cấu thép dàn ống bằng thuật toán vẽ gen (KCT)

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Tác giả: Quang Thành Đỗ, Việt Anh Ngô, Văn Tùng Trần

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Giao thông vận tải 2022

Mô tả vật lý: 116-121

Bộ sưu tập: Metadata

ID: 397281

Thêm vào giỏ Liên kết toàn văn

Yêu cầu ngày càng tăng đối với các kỹ sư nhằm giảm chi phí sản xuất để chống lại sự cạnh tranh toàn cầu đã thúc đẩy các kỹ sư tìm kiếm các phương pháp ra quyết định nghiêm ngặt, chẳng hạn như phương pháp tối ưu hóa để thiết kế và sản xuất các sản phẩm và hệ thống cả về kinh tế và hiệu quả. Các kỹ thuật tối ưu hóa đã đạt đến mức độ tiến bộ trong những năm gần đây, đang được sử dụng trong nhiều ngành công nghiệp, bao gồm hàng không vũ trụ, ô tô, hóa chất, điện, xây dựng và công nghiệp sản xuất. Ở một số khía cạnh, nó có thể được liên kết với việc tối ưu hóa chi phí, vì rõ ràng là nó dẫn đến việc sử dụng vật liệu tối ưu. Trong công trình dân dụng, các kết cấu được tối ưu hóa trọng lượng rất tiện lợi vì nó kết hợp giữa quá trình vận chuyển và lắp dựng làm cho quá trình xây dựng được đơn giản hóa. Một lợi thế khác của việc tối ưu hóa trọng lượng kết cấu là chia sẻ một phần tối thiểu của khả năng chịu tải được tham gia bởi chính kết cấu. Chương trình tối ưu hóa bằng gen di truyền là một kỹ thuật nghiên cứu hiệu quả dựa vào việc chọn lọc tự nhiên. Ý tưởng cơ bản ban đầu là kết hợp các nghiệm tốt nhất đối với một vấn đề bài toán cụ thể, sau khi trải qua nhiều bước tính toán lặp kết quả sẽ cải thiện dần và cuối cùng đạt được nghiệm tối ưu nhất. Tất cả các nghiệm ban đầu được lựa chọn ngẫu nhiên và chúng được trình bày riêng biệt bởi chuỗi nhị phân với sự tương đồng với nhiễm sắc thể tự nhiên, do đó nó được đặt tên là phương pháp lập trình về gen., Tóm tắt tiếng anh, The ever-increasing demand on engineers to lower production costs to withstand global competition has prompted engineers to look for rigorous methods of decision making, such as optimization methods, to design and produce products and systems both economically and efficiently . Optimization techniques, having reached a degree of maturity in recent years, are being used in a wide spectrum of industries, including aerospace, automotive, chemical, electrical, construction, and manufacturing industries. In some aspects it can be associated with cost optimization, since it obviouslyleads to an optimal material usage. In civil engineering, weight optimized structures are convenient since there is a combination of transportation and construction with the buildup is simplified. Another advantage of having a weight optimized structure is that a minimum share of the load-capacity is engaged by the structure itself. An efficient optimization technique is the use of genetic algorithms. GA, as it is most commonly referred to, is a type of evolutionary programming and probably the best-known today. It simulates the evolutionary principle of survival of the fittest by combining the best solutions to a problem in many generations to gradually improve the result. The initial population of solutions is created randomly, and as the evolution goes, the best individuals are combined in each generation until an optimal solution converges

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