IMECH-IR  > 流固耦合系统力学重点实验室
Numerical simulation of the fracture process in ceramic FPD frameworks caused by oblique loading
Kou W; Qiao JY(乔继延); Chen L(陈力); Ding YS(丁雁生); Sjogren G; Sjogren, G (reprint author), Umea Univ, Fac Med, Dent Mat Sci, SE-90187 Umea, Sweden.
Source PublicationJOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
2015-10
Volume50Pages:206-214
ISSN1751-6161
AbstractUsing a newly developed three-dimensional (3D) numerical modeling code, an analysis was performed of the fracture behavior in a three-unit ceramic-based fixed partial denture (FPD) framework subjected to oblique loading. All the materials in the study were treated heterogeneously; Weibull's distribution law was applied to the description of the heterogeneity. The Mohr-Coulomb failure criterion with tensile strength cut-off was utilized in judging whether the material was in an elastic or failed state. The simulated loading area was placed either on the buccal or the lingual cusp of a premolar-shaped pantie with the loading direction at 30 degrees, 45 degrees, 60 degrees, 75 degrees or 90 degrees angles to the occlusal surface. The stress distribution, fracture initiation and propagation in the framework during the loading and fracture process were analyzed. This numerical simulation allowed the cause of the framework fracture to be identified as tensile stress failure. The decisive fracture was initiated in the gingival embrasure of the pontic, regardless of whether the buccal or lingual cusp of the pontic was loaded. The stress distribution and fracture propagation process of the framework could be followed step by step from beginning to end. The bearing capacity and the rigidity of the framework vary with the loading position and direction. The framework loaded with 90 towards the occlusal surface has the highest bearing capacity and the greatest rigidity. The framework loaded with 30 towards the occlusal surface has the least rigidity indicating that oblique loading has a major impact on the fracture of ceramic frameworks. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordFinite Element Analysis Fixed Partial Denture Fracture Process Numerical Simulation Oblique Loading
DOI10.1016/j.jmbbm.2015.06.017
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000361775000019
WOS KeywordFIXED-PARTIAL DENTURES ; FINITE-ELEMENT-ANALYSIS ; FLEXURAL STRENGTH ; CONNECTOR DESIGN ; POSTERIOR TEETH ; RESISTANCE ; BEHAVIOR ; BRIDGES
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Biomedical ; Materials Science, Biomaterials
Funding OrganizationThe authors would like to thank the Faculty of Medicine, Umea University, Umea, Sweden and the Swedish Dental Association for financial support. We also acknowledge Cad. esthetics AB, Skelleftea, Sweden for providing data of the mechanical properties of the ceramic framework.
DepartmentLMFS冲击与耦合效应(LHO)
Classification一类
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58416
Collection流固耦合系统力学重点实验室
Corresponding AuthorSjogren, G (reprint author), Umea Univ, Fac Med, Dent Mat Sci, SE-90187 Umea, Sweden.
Recommended Citation
GB/T 7714
Kou W,Qiao JY,Chen L,et al. Numerical simulation of the fracture process in ceramic FPD frameworks caused by oblique loading[J]. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,2015,50:206-214.
APA Kou W,乔继延,陈力,丁雁生,Sjogren G,&Sjogren, G .(2015).Numerical simulation of the fracture process in ceramic FPD frameworks caused by oblique loading.JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,50,206-214.
MLA Kou W,et al."Numerical simulation of the fracture process in ceramic FPD frameworks caused by oblique loading".JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 50(2015):206-214.
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