FE analysis of fracture behavior in ceramics: Prediction of strength distribution using microstructural features

2021 ◽  
Author(s):  
Shingo Ozaki ◽  
Kazuki Yamagata ◽  
Chihiro Ito ◽  
Takuma Kohata ◽  
Toshio Osada
Keyword(s):  
Fracture Behavior ◽  
Strength Distribution ◽  
Fe Analysis

Characteristics of Strength and Deformation of Inner/Outer Local Wall Thinned Straight Pipes

2007 ◽  
Vol 353-358 ◽  
pp. 559-562 ◽  
Author(s):  
Seok Hwan Ahn ◽  
Kum Cheol Seok ◽  
Ki Woo Nam
Keyword(s):  
Fracture Behavior ◽  
Three Dimensional ◽  
Local Buckling ◽  
Fe Analysis ◽  
Metal Loss ◽  
Wall Thinning ◽  
Fracture Behaviors ◽  
Erosion Corrosion ◽  
Strength And Deformation ◽  
Local Wall Thinning

The experimental and the analysis for effects of circumferentially local wall thinning on the fracture behavior of pipes were carried out. Local wall thinning for experimental was machined on the outside of pipes in order to simulate the metal loss due to erosion/corrosion. In addition, the pipes with local wall thinning on the inside were carried out FE analysis, and it made a comparative study with that of outside. Failure mode could be classified into ovalization, local buckling and crack initiation depending on the thinned length and thinned ratio. Three-dimensional elasto-plastic analyses were able to accurately simulate fracture behaviors of inner/outer local wall thinning. Therefore the fracture behavior of the inner local wall thinning can be estimated with the outer local wall thinning.

Numerical Prediction of Fracture Behavior for Austenitic and Martensitic Stainless Steels

2017 ◽  
Vol 09 (04) ◽  
pp. 1750052 ◽  
Author(s):  
Goran Vukelic ◽  
Josip Brnic
Keyword(s):  
Fracture Toughness ◽  
Stainless Steels ◽  
Fracture Behavior ◽  
Fe Analysis ◽  
Fe Model ◽  
Single Edge ◽  
Type Specimens ◽  
Martensitic Stainless Steels ◽  
Standardized Formula ◽  
Senb Specimen

Two types of stainless steels are compared in this paper, austenitic X15CrNiSi25-20 and martensitic X20Cr13, based on their numerically predicted fracture behavior. There are engineering applications where both of the steels can be considered for use and where these materials can be exposed to crack occurrence and growth, so proper distinction between them is desirable. Comparison is made on the basis of [Formula: see text]-integral values that are numerically determined using finite element (FE) stress analysis results. FE analysis is performed on compact tensile (CT) and single-edge notched bend (SENB) type specimens that are usually used in standardized [Formula: see text]-integral experimental procedures. Calculated [Formula: see text]-integral values are plotted versus crack growth lengths for mentioned specimens. Results show somewhat higher values of [Formula: see text]-integral for steel X20Cr13 than X15CrNiSi25-20. Further, when comparing [Formula: see text]-integral values obtained through FE model of CT and SENB specimen, it is noticed that CT specimens give somewhat conservative results. Results obtained by this analysis can be used in predicting fracture toughness assessment during design process.

Tensile fracture behavior and strength distribution of SiCf/SiC composites with different SiBN interface thicknesses

2015 ◽  
Vol 41 (1) ◽  
pp. 1609-1616 ◽  
Author(s):  
Yongsheng Liu ◽  
Nan Chai ◽  
Hailong Qin ◽  
Zan Li ◽  
Fang Ye ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Strength Distribution ◽  
Tensile Fracture ◽  
Sic Composites

Fracture Behavior of AZ31-xCa (x=0, 0.7, 2.0 wt.%) Extrudes during Compression

2010 ◽  
Vol 48 (1) ◽  
pp. 85-89 ◽  
Author(s):  
Na Eun Kang ◽  
Chang Dong Yim ◽  
Bong Sun You ◽  
Ik Min Park
Keyword(s):  
Fracture Behavior

FE Analysis of hollow propeller shaft using different composite material - A Review study

2012 ◽  
Vol 2 (5) ◽  
pp. 204-205
Author(s):  
Nimesh A Patel ◽  
◽  
Pradip M Patel ◽  
Prof. A. B. Patel Prof. A. B. Patel
Keyword(s):  
Composite Material ◽  
Fe Analysis ◽  
Propeller Shaft ◽  
Review Study

Pavement Damage Due to Conventional and New Generation of Wide-Base Super Single Tires

2005 ◽  
Vol 33 (4) ◽  
pp. 210-226 ◽  
Author(s):  
I. L. Al-Qadi ◽  
M. A. Elseifi ◽  
P. J. Yoo ◽  
I. Janajreh
Keyword(s):  
Carrying Capacity ◽  
Material Properties ◽  
Three Dimensional ◽  
Fe Analysis ◽  
Load Carrying Capacity ◽  
Inflation Pressure ◽  
3D Finite Element ◽  
Load Carrying ◽  
Pavement Damage ◽  
New Generation

Abstract The objective of this study was to quantify pavement damage due to a conventional (385/65R22.5) and a new generation of wide-base (445/50R22.5) tires using three-dimensional (3D) finite element (FE) analysis. The investigated new generation of wide-base tires has wider treads and greater load-carrying capacity than the conventional wide-base tire. In addition, the contact patch is less sensitive to loading and is especially designed to operate at 690kPa inflation pressure at 121km/hr speed for full load of 151kN tandem axle. The developed FE models simulated the tread sizes and applicable contact pressure for each tread and utilized laboratory-measured pavement material properties. In addition, the models were calibrated and properly validated using field-measured stresses and strains. Comparison was established between the two wide-base tire types and the dual-tire assembly. Results indicated that the 445/50R22.5 wide-base tire would cause more fatigue damage, approximately the same rutting damage and less surface-initiated top-down cracking than the conventional dual-tire assembly. On the other hand, the conventional 385/65R22.5 wide-base tire, which was introduced more than two decades ago, caused the most damage.

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