Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains
In this work, the dynamic interaction between multiple cracks whose surfaces are symmetricallyimpact-loaded in infinite domains is investigated. Toward this end, the symmetric-Galerkinboundary element method (SGBEM) for 2-D elastodynamics in the Laplace-space frequency (Laplace-SGBEM) was employed t...
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| Format: | Article |
| Language: | English |
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AIMS Press
2016-11-01
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| Series: | AIMS Materials Science |
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| Online Access: | http://www.aimspress.com/Materials/article/1124/fulltext.html |
| _version_ | 1818288454260228096 |
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| author | A.-V. Phan |
| author_facet | A.-V. Phan |
| author_sort | A.-V. Phan |
| collection | DOAJ |
| description | In this work, the dynamic interaction between multiple cracks whose surfaces are symmetricallyimpact-loaded in infinite domains is investigated. Toward this end, the symmetric-Galerkinboundary element method (SGBEM) for 2-D elastodynamics in the Laplace-space frequency (Laplace-SGBEM) was employed to compute the dynamic stress intensity factors (DSIFs) for the cracks duringtheir interaction under dynamic loading conditions. Three examples of multi-crack dynamic interactionwere considered. The Laplace-SGBEM results show that the DSIFs will reach their maximumvalue after the cracks are loaded. It is followed by a damped-like oscillation of the DSIFs about theircorresponding static value. In addition, as the cracks approach each other, the dynamic stress field inthe vicinity of their crack tips interacts which results in an increase or decrease of the maximum DSIFs. |
| first_indexed | 2024-12-13T01:56:38Z |
| format | Article |
| id | doaj.art-9bb8267d3d5c4e75bf3dff20d248482b |
| institution | Directory Open Access Journal |
| issn | 2372-0484 |
| language | English |
| last_indexed | 2024-12-13T01:56:38Z |
| publishDate | 2016-11-01 |
| publisher | AIMS Press |
| record_format | Article |
| series | AIMS Materials Science |
| spelling | doaj.art-9bb8267d3d5c4e75bf3dff20d248482b2022-12-22T00:03:23ZengAIMS PressAIMS Materials Science2372-04842016-11-01341683169510.3934/matersci.2016.4.1683matersci-03-01683Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domainsA.-V. Phan0Department of Mechanical Engineering, University of South Alabama, 307 N. University Blvd, Mobile, AL 36688, USAIn this work, the dynamic interaction between multiple cracks whose surfaces are symmetricallyimpact-loaded in infinite domains is investigated. Toward this end, the symmetric-Galerkinboundary element method (SGBEM) for 2-D elastodynamics in the Laplace-space frequency (Laplace-SGBEM) was employed to compute the dynamic stress intensity factors (DSIFs) for the cracks duringtheir interaction under dynamic loading conditions. Three examples of multi-crack dynamic interactionwere considered. The Laplace-SGBEM results show that the DSIFs will reach their maximumvalue after the cracks are loaded. It is followed by a damped-like oscillation of the DSIFs about theircorresponding static value. In addition, as the cracks approach each other, the dynamic stress field inthe vicinity of their crack tips interacts which results in an increase or decrease of the maximum DSIFs.http://www.aimspress.com/Materials/article/1124/fulltext.htmlsymmetric-Galerkin boundary element method; Laplace domain; dynamic stress intensityfactors; multi-crack dynamic interaction |
| spellingShingle | A.-V. Phan Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains AIMS Materials Science symmetric-Galerkin boundary element method; Laplace domain; dynamic stress intensityfactors; multi-crack dynamic interaction |
| title | Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains |
| title_full | Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains |
| title_fullStr | Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains |
| title_full_unstemmed | Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains |
| title_short | Dynamic stress intensity factor analysis of the interaction between multiple impact-loaded cracks in infinite domains |
| title_sort | dynamic stress intensity factor analysis of the interaction between multiple impact loaded cracks in infinite domains |
| topic | symmetric-Galerkin boundary element method; Laplace domain; dynamic stress intensityfactors; multi-crack dynamic interaction |
| url | http://www.aimspress.com/Materials/article/1124/fulltext.html |
| work_keys_str_mv | AT avphan dynamicstressintensityfactoranalysisoftheinteractionbetweenmultipleimpactloadedcracksininfinitedomains |