Mixed-mode crack growth simulation in aviation engine compressor disk

2021 ◽  
Vol 246 ◽  
pp. 107617
Author(s):  
V. Shlyannikov ◽  
R. Yarullin ◽  
M. Yakovlev ◽  
V. Giannella ◽  
R. Citarella
Keyword(s):  
Crack Growth ◽  
Mixed Mode ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Mixed Mode Crack ◽  
Engine Compressor ◽  
Compressor Disk

Mixed mode crack growth simulation with/without overloads

2014 ◽  
Vol 67 ◽  
pp. 183-190 ◽  
Author(s):  
Slobodanka Boljanović ◽  
Stevan Maksimović
Keyword(s):  
Crack Growth ◽  
Mixed Mode ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Mixed Mode Crack

Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments

2015 ◽  
Author(s):  
Masanori Kikuchi ◽  
Yoshitaka Wada ◽  
Yulong Li
Keyword(s):  
Aluminum Alloy ◽  
Crack Growth ◽  
Mixed Mode ◽  
Heterogeneous Material ◽  
Initial Crack ◽  
Growth Path ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Cfrp Plate ◽  
Crack Growth Path

Fully automatic fatigue crack growth simulation system is developed using S-version FEM (SFEM). This system is extended to fracture in heterogeneous material. In the heterogeneous material, crack tip stress field becomes mixed mode condition, and crack growth path is affected by inhomogeneous materials and mixed mode conditions. Stress Intensity Factors (SIF) in mixed mode condition are evaluated using Virtual Crack Closure Method (VCCM). Criteria for crack growth amount and crack growth path are used based on these SIFs, and growing crack configurations are obtained. Three crack growth problems are simulated. One is crack growth in bi-materila made of CFRP plate and Aluminum alloy. Initial crack is located in CFRP plate, and grows toward Aluminum alloy. Crack growing direction changes and results are compared with experimental one. Second problem is crack growth in bimaterial made of PMMA and Aluminum alloy. Initial crack is located in PMMA plate and parallel to phase boundary. By cahnging loading conditions, several cases are simulated and compared with experimental ones. In the experiment, crack grows into pahse boundary and grow along it. This case is simulated precisely, and the effect of pahse boundary is discussed. Last case is Stress Corrosion Cracking (SCC) at Hot-Leg Safe-End of Pressurized Water Rreactor. This location is made of many kinds of steels by welding. In some steel, SCC does not occur and in other steel, SCC is accelerated. As a result, small surface crack grows in complicated manner.

Fatigue Crack Growth Simulation by Using S-Version FEM

2008 ◽  
Vol 385-387 ◽  
pp. 761-764
Author(s):  
Masanori Kikuchi ◽  
Yoshitaka Wada ◽  
Maigefeireti ◽  
Y. Li
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Mixed Mode ◽  
Crack Path ◽  
Loading Conditions ◽  
Mixed Mode Loading ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Curved Crack

Fatigue crack growth under mixed mode loading conditions is simulated using S-version FEM (Superposition FEM, S-FEM). By using S-FEM technique, only local mesh should be re-meshed and it becomes easy to simulate crack growth. By combining with re-meshing technique, local mesh is re-meshed automatically, and curved crack path is modeled easily.

Mixed-mode crack growth predictions

1987 ◽  
Vol 28 (2) ◽  
pp. 211-221 ◽  
Author(s):  
E.E. Gdoutos
Keyword(s):  
Crack Growth ◽  
Mixed Mode ◽  
Mixed Mode Crack
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