Three-Dimensional Finite-Element Simulation of Fatigue Crack Growth and Closure

2009 ◽  
pp. 398-398-16 ◽  
Author(s):  
RG Chermahini ◽  
KN Shivakumar ◽  
JC Newman
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Finite Element Simulation ◽  
Crack Growth ◽  
Three Dimensional ◽  
Element Simulation ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Three-dimensional, parallel, finite element simulation of fatigue crack growth in a spiral bevel pinion gear

2005 ◽  
Vol 72 (8) ◽  
pp. 1148-1170 ◽  
Author(s):  
Anı Ural ◽  
Gerd Heber ◽  
Paul A. Wawrzynek ◽  
Anthony R. Ingraffea ◽  
David G. Lewicki ◽  
...  
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Finite Element Simulation ◽  
Crack Growth ◽  
Three Dimensional ◽  
Pinion Gear ◽  
Element Simulation ◽  
Parallel Finite Element ◽  
Spiral Bevel

Fatigue Crack Growth Life Prediction for Surface Crack Located in Stress Concentration Part Based on the Three-Dimensional Finite Element Method

2004 ◽  
Vol 126 (1) ◽  
pp. 160-166 ◽  
Author(s):  
Y. Yamashita ◽  
M. Shinozaki ◽  
Y. Ueda ◽  
K. Sakano
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Surface Crack ◽  
Three Dimensional ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Element Method

Fatigue crack growth prediction methods using three-dimensional finite element analyses were investigated to improve the predictability of part-through surface crack growth life. First, a direct analysis method of cyclic finite element analysis was adopted. Fatigue crack growth was predicted on a step by step basis from the Paris’ law using stress intensity factor range ΔK calculated by the three-dimensional finite element method. This method takes the procedure of cyclic operation of finite element analysis modeled with crack tip elements, crack growth increment calculation and remeshing of the finite element model. Second, a method based on the influence function method for the ΔK calculation directly using three-dimensional finite element method analysis result has been developed and applied. It was found that crack growth prediction based on the step by step finite element method and the method based on the influence function method showed good correlation with the experimental results if Paris’ law coefficient C, determined by CT specimen, was appropriately used for a semi-elliptical surface crack.

Finite Element Simulation of Stable Fatigue Crack Growth Using Critical CTOD Determined by Preliminary Finite Element Analysis

2014 ◽  
Vol 891-892 ◽  
pp. 1675-1680
Author(s):  
Seok Jae Chu ◽  
Cong Hao Liu
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Finite Element Simulation ◽  
Crack Growth ◽  
Crack Tip ◽  
Stress Intensity Factor Range ◽  
Crack Tip Opening Displacement ◽  
Element Analysis ◽  
Element Simulation

Finite element simulation of stable fatigue crack growth using critical crack tip opening displacement (CTOD) was done. In the preliminary finite element simulation without crack growth, the critical CTOD was determined by monitoring the ratio between the displacement increments at the nodes above the crack tip and behind the crack tip in the neighborhood of the crack tip. The critical CTOD was determined as the vertical displacement at the node on the crack surface just behind the crack tip at the maximum ratio. In the main finite element simulation with crack growth, the crack growth rate with respect to the effective stress intensity factor range considering crack closure yielded more consistent result. The exponents m in the Paris law were determined.

Sign in / Sign up

Export Citation Format

Share Document