| 3D FINITE ELEMENTANALYSIS OF THE DAMAGE EFFECTS ON THE DENTAL COMPOSITE SUBJECT TO WATER SORPTION |
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| 作者姓名： | Fan Jianping Tsui C.P. Tang C.Y. Chow C.L. |
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| 作者单位： | Department of Industrial and Systems Engineering The Hong Kong Polytechnic University，Hong Kong China，Department of Mechanical Engineering，The University of Michigan-Dearborn，Dearborn，Michigan，USA |
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| 基金项目： | 香港理工大学校科研和教改项目 |
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| 摘 要： | The damage effects of water sorption on the mechanical properties of the hydroxya-patite particle reinforced Bis-GMA/TEGDMA copolymer (HA/Bis-GMA/TEGDMA) have been predicted using 3D finite cell models. The plasticizer effect on the polymer matrix was considered as a variation of its Young's modulus. Three different cell models were used to determine the influence of varying particle contents, interphase strength and moisture concentration on the debonding damage. The stress distribution pattern has been examined and the stress transfer mode clarified. The Young's modulus and fracture strength of the Bis-GMA/TEGDMA composite were also predicted using the model with and without consideration of the damage. The former results with consideration of the debonding damage are in good agreement with existing literature experimental data. The shielding effect of our proposed model and an alternative approach were discussed. The FCC cell model has also been extended to predict the critical load for the damaged and the undamaged composite subject to the 3-point flexural test.
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| 关 键 词： | 水吸附 牙齿复合材料 界面松懈工艺 有限元法 单元细胞模型 |
| 收稿时间： | 2005-01-04 |
| 修稿时间： | 2005-11-30 |
3D FINITE ELEMENT ANALYSIS OF THE DAMAGE EFFECTS ON THE DENTAL COMPOSITE SUBJECT TO WATER SORPTION |
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| Fan Jianping Tsui,C.P. Tang,C.Y. Chow,C.L..3D FINITE ELEMENTANALYSIS OF THE DAMAGE EFFECTS ON THE DENTAL COMPOSITE SUBJECT TO WATER SORPTION[J].Acta Mechanica Solida Sinica,2006,19(3):212-222. |
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| Authors: | Fan Jianping Tsui CP Tang CY Chow CL |
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| Institution: | 1. Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, United States;2. Department of Mathematics, The George Washington University, Washington, DC 20052, United States |
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| Abstract: | The damage effects of water sorption on the mechanical properties of the hydroxya-patite particle reinforced Bis-GMA/TEGDMA copolymer (HA/Bis-GMA/TEGDMA) have been predicted using 3D finite cell models. The plasticizer effect on the polymer matrix was considered as a variation of its Young's modulus. Three different cell models were used to determine the influence of varying particle contents, interphase strength and moisture concentration on the debonding damage. The stress distribution pattern has been examined and the stress transfer mode clarified. The Young's modulus and fracture strength of the Bis-GMA/TEGDMA composite were also predicted using the model with and without consideration of the damage. The former results with consideration of the debonding damage are in good agreement with existing literature experimental data. The shielding effect of our proposed model and an alternative approach were discussed. The FCC cell model has also been extended to predict the critical load for the damaged and the undamaged composite subject to the 3-point flexural test. |
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| Keywords: | water sorption dental composite interphase debonding finite element method (FEM) unit cell model |
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