3차원 유한요소해석을 이용한 자유경계조건에서의 두께 1.7 mm DP 780 고강도 강판의 저속 충격 특성 분석A Study on Low Velocity Impact Characteristics of DP 780 High Strength Steel Sheet with Thickness of 1.7 mm on the Free Boundary Condition Using Three-Dimensional Finite Element Analysis

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dc.contributor.author안동규ko
dc.contributor.author남경흠ko
dc.contributor.author성대용ko
dc.contributor.author양동열ko
dc.contributor.author임지호ko
dc.date.accessioned2013-03-09T18:59:03Z-
dc.date.available2013-03-09T18:59:03Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-11-
dc.identifier.citation한국정밀공학회지, v.27, no.11, pp.46 - 56-
dc.identifier.issn1225-9071-
dc.identifier.urihttp://hdl.handle.net/10203/97210-
dc.description.abstractThe present research works investigated into the low velocity impact characteristics of DP 780 high strength steel sheet with 1.7 mm in thickness subjected to free boundary condition using three-dimensional finite element analysis. Finite element analysis was carried out via ABAQUS explicit code. Hyper-elastic model and the damping factor were introduced to improve an accuracy of the FE analysis. An appropriate FE model was obtained via the comparison of the results of the FE analyses and those of the impact tests. The influence of the impact energy and nose diameter of the impact head on the force-deflection curves, impact time, absorption characteristics of the impact energy, deformation behaviours, and stress-strain distributions was quantitatively examined using the results of FE analysis. The results of the FE analysis showed that the absorption rate of impact energy lies in the range of the 70.7-77.5 %. In addition, it was noted that the absorption rate of impact energy decreases when the impact energy increases and the nose diameter of the impact head decreases. The local deformation of the impacted region was rapidly increased when the impact energy was larger than 76.2 J and the nose diameter was 20 mm. A critical impact energy, which occur the instability of the DP780, was estimated using the relationship between the plastic strain and the impact energy. Finally, characteristics of the plastic energy dissipation and the strain energy density were discussed.-
dc.languageKorean-
dc.publisher한국정밀공학회-
dc.title3차원 유한요소해석을 이용한 자유경계조건에서의 두께 1.7 mm DP 780 고강도 강판의 저속 충격 특성 분석-
dc.title.alternativeA Study on Low Velocity Impact Characteristics of DP 780 High Strength Steel Sheet with Thickness of 1.7 mm on the Free Boundary Condition Using Three-Dimensional Finite Element Analysis-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume27-
dc.citation.issue11-
dc.citation.beginningpage46-
dc.citation.endingpage56-
dc.citation.publicationname한국정밀공학회지-
dc.identifier.kciidART001489526-
dc.contributor.localauthor양동열-
dc.contributor.nonIdAuthor안동규-
dc.contributor.nonIdAuthor남경흠-
dc.contributor.nonIdAuthor성대용-
dc.contributor.nonIdAuthor임지호-
dc.subject.keywordAuthorLow Velocity Impact Characteristics (저속충격특성)-
dc.subject.keywordAuthorDP780 High Strength Steel Sheet (DP780 고강도 강판)-
dc.subject.keywordAuthorFree Boundary Condition (자유경계조건)-
dc.subject.keywordAuthorThree-Dimensional Finite Element Analysis (3차원 유한요소해석)-
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ME-Journal Papers(저널논문)
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