Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments
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 mate...
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Gruppo Italiano Frattura
2015-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_34.pdf |
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| author | Masanori Kikuchi Yoshitaka Wada Yulong Li |
| author_facet | Masanori Kikuchi Yoshitaka Wada Yulong Li |
| author_sort | Masanori Kikuchi |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-bfedaed3186641fe8acff2d9a4d64cd4 |
| institution | DOAJ |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2015-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-bfedaed3186641fe8acff2d9a4d64cd42025-08-20T02:51:42ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932015-10-0193431832510.3221/IGF-ESIS.34.34Crack growth simulation in heterogeneous material by S-FEM and comparison with experimentsMasanori Kikuchi0Yoshitaka Wada1Yulong Li2Tokyo University of Science,JapanKowakae, Higashi-Oosaka,JapanNorthwestern Polytechnical University,ChinaFully 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.http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_34.pdfHeterogeneous MaterialS-FEM; FatigueSCCVCCM |
| spellingShingle | Masanori Kikuchi Yoshitaka Wada Yulong Li Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments Fracture and Structural Integrity Heterogeneous Material S-FEM; Fatigue SCC VCCM |
| title | Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments |
| title_full | Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments |
| title_fullStr | Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments |
| title_full_unstemmed | Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments |
| title_short | Crack growth simulation in heterogeneous material by S-FEM and comparison with experiments |
| title_sort | crack growth simulation in heterogeneous material by s fem and comparison with experiments |
| topic | Heterogeneous Material S-FEM; Fatigue SCC VCCM |
| url | http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_34.pdf |
| work_keys_str_mv | AT masanorikikuchi crackgrowthsimulationinheterogeneousmaterialbysfemandcomparisonwithexperiments AT yoshitakawada crackgrowthsimulationinheterogeneousmaterialbysfemandcomparisonwithexperiments AT yulongli crackgrowthsimulationinheterogeneousmaterialbysfemandcomparisonwithexperiments |