The degradable performance of bile‐duct stent based on a continuum damage model: A finite element analysis

2020 ◽  
Vol 36 (8) ◽  
Author(s):  
Xiaoyu Ni ◽  
Yanhong Zhang ◽  
Changwang Pan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bile Duct ◽  
Damage Model ◽  
Continuum Damage ◽  
Element Analysis ◽  
Continuum Damage Model ◽  
Bile Duct Stent

Viscoelastic continuum damage model based finite element analysis of fatigue cracking

2008 ◽  
Author(s):  
V Subramanian ◽  
M Guddati ◽  
Y Kim ◽  
B Underwood ◽  
K Lee ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Damage Model ◽  
Fatigue Cracking ◽  
Continuum Damage ◽  
Element Analysis ◽  
Continuum Damage Model ◽  
Viscoelastic Continuum Damage ◽  
Model Based

Application of viscoelastic continuum damage model based finite element analysis to predict the fatigue performance of asphalt pavements

2008 ◽  
Vol 12 (2) ◽  
pp. 109-120 ◽  
Author(s):  
Y. Richard Kim ◽  
Cheolmin Baek ◽  
B. Shane Underwood ◽  
Vijay Subramanian ◽  
Murthy N. Guddati ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Damage Model ◽  
Fatigue Performance ◽  
Asphalt Pavements ◽  
Continuum Damage ◽  
Element Analysis ◽  
Continuum Damage Model ◽  
Viscoelastic Continuum Damage ◽  
Model Based

Damage Evaluation of Grade 91 Thick Cylinder Under Variable Thermal Cyclic Loading Using Continuum Damage Coupled Viscoplastic Models

2019 ◽  
Author(s):  
Nazrul Islam ◽  
Tasnim Hassan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Temperature ◽  
Creep Deformation ◽  
Continuum Damage ◽  
Element Analysis ◽  
Energy Agency ◽  
Creep Fatigue ◽  
Thick Cylinder ◽  
Grade 91

Abstract This study evaluates creep-fatigue damage in the modified Grade 91 thick-cylinder tested by Japan Atomic Energy Agency (JAEA), to understand the failure mechanism of critical components of Fast Reactor nuclear plants. As modified Grade 91 demonstrated creep-fatigue interaction induced failure mechanisms, finite element analysis of high-temperature components will require a unified constitutive model (UCM) that can simulate various creep-fatigue responses with reasonable accuracy. Hence, a UCM coupled with various advanced modeling features including the continuum damage modeling features is investigated to demonstrate their predictability of the fatigue, creep and creep-fatigue responses of the modified Grade 91 steel. The modified UCM is implemented into ABAQUS for analysis of creep deformation in the thick cylinder benchmark problem. Finite element analysis results are presented to demonstrate how the thermal cycling influences the creep-deformation of this high-temperature component. It is also demonstrated how thermal cycling’s influence on fatigue life can be determined based on the damage variable incorporated in the UCM.

scholarly journals Finite Element Analysis of the Size Effect on Ceramic Strength

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2885 ◽  
Author(s):  
Kyohei Takeo ◽  
Yuya Aoki ◽  
Toshio Osada ◽  
Wataru Nakao ◽  
Shingo Ozaki
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Size Effect ◽  
Damage Model ◽  
Fracture Probability ◽  
Element Analysis ◽  
Weibull Statistics ◽  
Weakest Link ◽  
The Finite Element Analysis ◽  
The Relationship

The most prominent effect of the weakest link theory, which is used to derive the Weibull statistics of ceramic strength, is the size effect. In this study, we analyze the size effect on ceramic strength using the finite element analysis (FEA) methodology previously proposed by the authors. In the FEA methodology, the data of the microstructure distribution (i.e., relative density, size, and aspect ratio of the pore and the grain size) are considered as input parameters of a continuum damage model via a fracture mechanical model. Specifically, we examine five sizes of rectangular specimens under three types of loading conditions. Then, we simulate the fracture stresses of sets of 30 specimens under each size and loading condition and obtain the relationship between the scale parameter and effective volume using the Weibull distribution. The results suggest that the proposed FEA methodology can be applied to the analysis of the fracture probability of ceramics, including the size effect.

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