caa a22 4500 469123990 CHVBK 20180323133146.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00017342 doi (NATIONALLICENCE)springer-10.1007/BF00017342 Effects of prestrain on the fracture properties of pressure vessel steel [Elektronische Daten] [Zhu Hanxing, Li Guangxia, Li Changchun, Hideo Kitagawa] In this paper, various methods have been used to measure the effects of prestrain on the fracture toughness of 20 g steel experimentally. Based on elastic-plastic FEM analysis, the relationships between crack tip opening displacement δT and the maximum strain εmaxc have been obtained and the effects of prestrain εp on the critical fracture strain εmaxc have been examined. At the same time, based on the Rice-Tracey's void growth model [4], the cause of the void formation ahead of the crack tip, the condition of the principal crack propagation and the effects of prestrain εp on the fracture properties of 20 g steel were investigated. For ductile material there was a maximum value of V G ahead of the crack tip that was the cause of the void formation in that place. It is believed that when the maximum value of V G ahead of the crack tip reaches a critical value, it may be the principal crack propagating condition for high ductile material. Kluwer Academic Publishers, 1992 Hanxing Zhu Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut Guangxia Li Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut Changchun Li Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut Kitagawa Hideo Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut International Journal of Fracture Kluwer Academic Publishers 53/3(1992-02-01), 291-299 0376-9429 53:3<291 1992 53 10704 https://doi.org/10.1007/BF00017342 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00017342 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hanxing Zhu Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut NATIONALLICENCE 700 1- Guangxia Li Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut NATIONALLICENCE 700 1- Changchun Li Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut NATIONALLICENCE 700 1- Kitagawa Hideo Department of Mechanics, Huazbong University of Science and Technology, Wuhan, Peoples' Republic of China aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 53/3(1992-02-01), 291-299 0376-9429 53:3<291 1992 53 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 469123990 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer