| 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.
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| 发表期刊 | JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
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| 2015-10
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| 卷号 | 50页码:206-214 |
| ISSN | 1751-6161
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| 摘要 | Using 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. |
| 关键词 | Finite Element Analysis
Fixed Partial Denture
Fracture Process
Numerical Simulation
Oblique Loading
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| DOI | 10.1016/j.jmbbm.2015.06.017
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| URL | 查看原文
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| 收录类别 | SCI
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| 语种 | 英语
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| WOS记录号 | WOS:000361775000019
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| 关键词[WOS] | FIXED-PARTIAL DENTURES
; FINITE-ELEMENT-ANALYSIS
; FLEXURAL STRENGTH
; CONNECTOR DESIGN
; POSTERIOR TEETH
; RESISTANCE
; BEHAVIOR
; BRIDGES
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| WOS研究方向 | Engineering
; Materials Science
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| WOS类目 | Engineering, Biomedical
; Materials Science, Biomaterials
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| 项目资助者 | The 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.
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| 课题组名称 | LMFS冲击与耦合效应(LHO)
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| 论文分区 | 一类
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/58416
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | Sjogren, G (reprint author), Umea Univ, Fac Med, Dent Mat Sci, SE-90187 Umea, Sweden. |
推荐引用方式
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.
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| 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.
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| 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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