Fatigue crack growth simulation under cyclic non-proportional mixed mode loading

2017 ◽  
Vol 102 ◽  
pp. 37-47 ◽  
Author(s):  
Ying Yang ◽  
Michael Vormwald
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Growth Simulation ◽  
Crack Growth Simulation

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.

Fatigue Crack Growth Simulation Using S-Version FEM

2008 ◽  
Vol 33-37 ◽  
pp. 133-138 ◽  
Author(s):  
Masanori Kikuchi ◽  
Yoshitaka Wada ◽  
Masafumi Takahashi ◽  
Yu Long Li
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Crack Path ◽  
Crack Problem ◽  
Crack Coalescence ◽  
Mixed Mode Loading ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Curved Crack

Fatigue crack growth under mixed mode loading conditions is simulated using 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 auto-meshing technique, local mesh is re-meshed automatically, and curved crack path is modeled easily. Plural fatigue crack problem is solved by this technique. For two parallel crack problem, criteria of crack coalescence are proposed. By simulating this problem by S-FEM, it is verified these criteria are conservative ones.

Numerical Simulation of Fatigue Crack Growth for Curved Cracks Emanating from Fastener Holes in Sheets by the MVCCI Method

2006 ◽  
Vol 324-325 ◽  
pp. 863-866
Author(s):  
Holger Theilig ◽  
M. Goth ◽  
Michael Wünsche
Keyword(s):  
Numerical Simulation ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Plane Stress ◽  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Multiple Crack ◽  
2D Structure ◽  
Predictor Corrector

The paper presents the results of a continued study of curved fatigue crack growth in a multiple arbitrarily pre-cracked isotropic sheet under plane stress loading. The predictor-corrector method (PCM) was extended in order to analyse the growth of multiple crack systems in a finite 2D structure. Together with the recently proposed improved modified virtual crack closure integral (MVCCI) method we can obtain accurate SIF values also for interacting cracks, and furthermore we can simulate fatigue crack growth of multiple crack systems in plane sheets under proportional mixed mode loading conditions. As a result, the program PCCS-2D is written to run within ANSYS to simulate interacting curved cracks. In order to check the accuracy and efficiency of the proposed method several example problems are solved. Especially curved cracks emanating from loaded fastener holes in sheets are analysed.

Sign in / Sign up

Export Citation Format

Share Document