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The paper presents a comprehensive analysis of the stress field near a crack tip for a compact specimen dominated by the plane strain state using the finite element method. The analysis also includes the calculation of some parameters of in-plane constraints, both for small and large strain assumptions. It discusses the influence of the material characteristic, relative crack length and external load...
W pracy zaprezentowano katalog rozwiązań numerycznych dla próbek trójpunktowo zginanych, zawierających pęknięcie, uzyskanych dla przypadku dominacji płaskiego stanu odkształcenia przy założeniu w analizie dużych odkształceń. Podano szczegóły budowy modelu numerycznego, a także omówiono wpływ granicy plastyczności, wykładnika umocnienia w prawie Ramberga-Osgooda oraz długości pęknięcia na wartość naprężeń...
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