顺便说一下,Johnson-Cook Damage准则需要指定材料损伤参数D1~D5,其中D3代表应力三轴度因子,也正是由于上述定义的原因,Abaqus中输入D3的时候,也要在原始的数值上加一个负号,ABQ就是这么与众不同。 3、计算完毕,在后处理的菜单栏Result-Step/Frame面板选择Session Step,点击Apply,即可得到应力三轴度云图 Abaqus/S...
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We sustain that the walls of these structures present a high level of stress triaxiality due to their high state of confinement. In the present contribution, an alternative, analytical approach for the computation of the plastic collapse pressure of steel pipes is proposed. It is shown to ...
Numerical simulations of each test was performed using commercial finite element code ABAQUS. Good correlation of experiments and numerical simulations was achieved. Based on the experimental and numerical results, the relation between the equivalent strain to fracture versus the stress triaxiality was ...
Numerical simulations of each test was performed using commercial finite element code ABAQUS. Good correlation of experiments and numerical simulations was achieved. Based on the experimental and numerical results, the relation between the equivalent strain to fracture versus the stress triaxiality was ...
Dorogoy A, Karp B, Rittel D (2011) A shear compression disk specimen with controlled stress triaxiality under quasi-static loading. Exp Mech 51:1545–1557 Google Scholar Abaqus/CAE version 6.9-EF1 2009. Dassault Systemes Simulia Corporation, Providence, RI, USA Klepaczko JR (1994) An experime...
基于应力三轴度的材料失效分析-failure analysis of materials based on stress triaxiality AbstractThedynamicfractureisveryimportantforthesurvivabilityofthecriticalstructure.ChoosingthemostsuitablefracturecriterionisthekeystepsforthesafetyassessmentwhenusingFEMmethod.AtpresenttheconstantstraincriterionandJohnson-cookfailure...
Bao YB, Wierzbicki T (2004) On fracture locus in the equivalent strain and stress triaxiality space. Int J Eng Sci 46:81–98 Google Scholar Barsoum I, Faleskog J (2007) Rupture mechanisms in combined tension and shear-experiments. Int J Solids Struct 44: 1768–1786 Google Scholar Barsou...
The results demonstrate that the K-f factor poorly incorporates the notch effects for sharp notches and high-strength metals, whereas the stress triaxiality factor, using Abaqus FEA simulation, overcomes these flaws and efficiently incorporates the notch effect in fatigue life models....
A single parameter, the crack tip opening displacement, is not sufficient to characterise the initiation of ductile tearing of a material in different crack tip stress triaxiality states. The value of CTOD, δi, at fracture initiation strongly depends on the in-plane constrint. The experimental ...