A novel model for determining the strength and fracture parameters of Q235 steel using double symmetrical edges notched specimens

• Autorzy: Han, Ruicong , Meng, Wei , Guan, Junfeng , Hao, Ying , Yao, Xianhua , Li, Lielie , He, Shuanghua
• Języki publikacji: EN

Abstrakty

EN

A fracture model has been established for simultaneously determining the strength and fracture parameters of materials without size effect using double symmetrical edges notched specimens of metal. The specific method is presented for determining yield strength and fracture toughness using experimental yield loads of the small specimens in laboratory. The formula of nominal stress of double symmetrical edges notched specimen under uniaxial tension considering plastic zone is derived. The influence of different plastic zones size on calculating the fracture and strength parameters has been analyzed. The complete fracture failure curves of the metal material are obtained. The theoretical minimum size of metal specimen satisfying the conditions of linear elastic fracture mechanics is given. The normal method is used to analyze the dispersion of small-size double symmetrical edges notched specimens of hot-rolled carbon steel to predict the fracture properties of large-size specimens. A novel approach has been provided for the rational determination of realistic material parameters and the prediction of load carrying capacity of large-size structures by experimental fracture tests for small-size specimens.

Słowa kluczowe

EN

hot rolled carbon steel; symmetrical edges notched specimen; fracture toughness

• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 2
• Strony: art. no. e75, 2023
• Opis fizyczny: Bibliogr. 42 poz., rys., tab., wykr.

Twórcy

autor

Han, Ruicong

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China

autor

Meng, Wei

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China

autor

Guan, Junfeng

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China,

autor

Hao, Ying

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China,

autor

Yao, Xianhua

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China

autor

Li, Lielie

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China

autor

He, Shuanghua

• School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, People’s Republic of China

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).

Identyfikatory

DOI

10.1007/s43452-023-00611-z