TY - JOUR
T1 - Fatigue crack growth simulation using S-version FEM (2nd report, study on interaction of two parallel cracks)
AU - Kikuchi, Masanori
AU - Takahashi, Masafumi
AU - Wada, Yoshitaka
AU - Li, Yulong
PY - 2008/9
Y1 - 2008/9
N2 - 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 re' meshing technique, local mesh is re-meshed automatically, and curved crack path is modeled easily. In the previous paper, basic problems were solved, and availability of this method was verified. In this paper, interaction of two parallel cracks with differont level is studied. By changing relative locations of two cracks, totally 161 cases are solved, and results are summarized by normalized form. It is shown that there is a clear area in which interaction between two cracks is not neglected. A new criterion to evaluate interaction effect between two parallel cracks is proposed.
AB - 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 re' meshing technique, local mesh is re-meshed automatically, and curved crack path is modeled easily. In the previous paper, basic problems were solved, and availability of this method was verified. In this paper, interaction of two parallel cracks with differont level is studied. By changing relative locations of two cracks, totally 161 cases are solved, and results are summarized by normalized form. It is shown that there is a clear area in which interaction between two cracks is not neglected. A new criterion to evaluate interaction effect between two parallel cracks is proposed.
KW - Auto-mesh
KW - Fatigue fracture
KW - Interaction effect
KW - Mixed mode
KW - S-version FEM
UR - http://www.scopus.com/inward/record.url?scp=57149131288&partnerID=8YFLogxK
U2 - 10.1299/kikaia.74.1243
DO - 10.1299/kikaia.74.1243
M3 - 文章
AN - SCOPUS:57149131288
SN - 0387-5008
VL - 74
SP - 1243
EP - 1248
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
IS - 9
ER -