Proračun parametara mehanike loma za površinske prsline primenom modela niza opruga
Evaluation of fracture mechanics parameters for surface cracks by application of line spring model
Apstrakt
Prikazan je proračun parametara mehanike loma za površinsku prslinu primenom modela niza opruga. Korišćena je Kingova metoda za određivanja otvaranja usta i vrha prsline, na osnovu čega je određen i J integral za idealno plastične materijale. Ukazano je na neke probleme u primeni ove metoda i moguće modifikacije za njihovo prevazilaženje. Takođe je ukazano i na mogućnosti rešavanja problema kao što su zaostali naponi i geometrijske nepravilnosti, koji mogu značajno da utiču na ponašanje zavarenih spojeva.
Evaluation of fracture mechanics parameters for surface cracks using line spring model has been shown. King's method for crack mouth and tip displacement evaluation was applied, on basis of what the J integral for perfectly plastic materials was determined. Some problems in application of King's method are pointed out, as well as possible modifications of this method for their solution. Possibilities to solve the problems such as residual stresses and geometry imperfections, which can significantly affect welded joint behavior, are also introduced and analyzed.
Ključne reči:
sila rasta prsline / površinske prsline / model niza opruga / Dagdejlov model / surface cracks / line spring model / Dugdale's model / crack driving forceIzvor:
Integritet i vek konstrukcija, 2001, 1, 2, 91-96Izdavač:
- Institut za ispitivanje materijala, Beograd
Institucija/grupa
Inovacioni centarTY - JOUR AU - Aleksić, Vujadin AU - Sedmak, Aleksandar AU - Arsić, Miodrag AU - Milutinović, Zlatan PY - 2001 UR - https://machinery.mas.bg.ac.rs/handle/123456789/247 AB - Prikazan je proračun parametara mehanike loma za površinsku prslinu primenom modela niza opruga. Korišćena je Kingova metoda za određivanja otvaranja usta i vrha prsline, na osnovu čega je određen i J integral za idealno plastične materijale. Ukazano je na neke probleme u primeni ove metoda i moguće modifikacije za njihovo prevazilaženje. Takođe je ukazano i na mogućnosti rešavanja problema kao što su zaostali naponi i geometrijske nepravilnosti, koji mogu značajno da utiču na ponašanje zavarenih spojeva. AB - Evaluation of fracture mechanics parameters for surface cracks using line spring model has been shown. King's method for crack mouth and tip displacement evaluation was applied, on basis of what the J integral for perfectly plastic materials was determined. Some problems in application of King's method are pointed out, as well as possible modifications of this method for their solution. Possibilities to solve the problems such as residual stresses and geometry imperfections, which can significantly affect welded joint behavior, are also introduced and analyzed. PB - Institut za ispitivanje materijala, Beograd T2 - Integritet i vek konstrukcija T1 - Proračun parametara mehanike loma za površinske prsline primenom modela niza opruga T1 - Evaluation of fracture mechanics parameters for surface cracks by application of line spring model EP - 96 IS - 2 SP - 91 VL - 1 UR - https://hdl.handle.net/21.15107/rcub_machinery_247 ER -
@article{ author = "Aleksić, Vujadin and Sedmak, Aleksandar and Arsić, Miodrag and Milutinović, Zlatan", year = "2001", abstract = "Prikazan je proračun parametara mehanike loma za površinsku prslinu primenom modela niza opruga. Korišćena je Kingova metoda za određivanja otvaranja usta i vrha prsline, na osnovu čega je određen i J integral za idealno plastične materijale. Ukazano je na neke probleme u primeni ove metoda i moguće modifikacije za njihovo prevazilaženje. Takođe je ukazano i na mogućnosti rešavanja problema kao što su zaostali naponi i geometrijske nepravilnosti, koji mogu značajno da utiču na ponašanje zavarenih spojeva., Evaluation of fracture mechanics parameters for surface cracks using line spring model has been shown. King's method for crack mouth and tip displacement evaluation was applied, on basis of what the J integral for perfectly plastic materials was determined. Some problems in application of King's method are pointed out, as well as possible modifications of this method for their solution. Possibilities to solve the problems such as residual stresses and geometry imperfections, which can significantly affect welded joint behavior, are also introduced and analyzed.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Integritet i vek konstrukcija", title = "Proračun parametara mehanike loma za površinske prsline primenom modela niza opruga, Evaluation of fracture mechanics parameters for surface cracks by application of line spring model", pages = "96-91", number = "2", volume = "1", url = "https://hdl.handle.net/21.15107/rcub_machinery_247" }
Aleksić, V., Sedmak, A., Arsić, M.,& Milutinović, Z.. (2001). Proračun parametara mehanike loma za površinske prsline primenom modela niza opruga. in Integritet i vek konstrukcija Institut za ispitivanje materijala, Beograd., 1(2), 91-96. https://hdl.handle.net/21.15107/rcub_machinery_247
Aleksić V, Sedmak A, Arsić M, Milutinović Z. Proračun parametara mehanike loma za površinske prsline primenom modela niza opruga. in Integritet i vek konstrukcija. 2001;1(2):91-96. https://hdl.handle.net/21.15107/rcub_machinery_247 .
Aleksić, Vujadin, Sedmak, Aleksandar, Arsić, Miodrag, Milutinović, Zlatan, "Proračun parametara mehanike loma za površinske prsline primenom modela niza opruga" in Integritet i vek konstrukcija, 1, no. 2 (2001):91-96, https://hdl.handle.net/21.15107/rcub_machinery_247 .
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