在形非线性动态有限元素分析用于CAD/CAM材料的双轴屈曲强度测试
Hefei Li1, Satoshi Yamaguchi1, Chunwoo Lee1
1Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, Suita, Japan.
这项研究验证了CAD/CAM材料的in silico双轴屈曲强度 (BFS) 模型,表明它们可以准确预测体外物理性质并减少材料浪费.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 计算建模 计算建模
背景情况:
- 计算机辅助设计/计算机辅助制造 (CAD/CAM) 材料越来越多地用于牙科.
- 精确评估机械性能,如双轴屈曲强度 (BFS),对于材料选择至关重要.
- 试验室内测试可能是资源密集的,并导致材料浪费.
研究的目的:
- 建立和验证用于BFS测试的in silico模型.
- 评估in silico预测和in vitro物理性质之间的相关性.
- 为了评估CAD/CAM陶和树脂复合材料块.
主要方法:
- 在实验室中,对三种CAD/CAM材料进行了三点曲和BFS测试.
- 材料属性 (密度,弹性模量,断裂强度) 是通过体外试验获得的.
- 非线性有限元素分析 (FEA) 用于in silico BFS建模.
主要成果:
- 对于ST10的in silico骨折模式与体外观察结果非常相匹配.
- 在拉力表面上始终发现最大主应力 (MPS).
- 确定了Avencia N,HT10和ST10的弹性模块.
结论:
- 开发的in silico方法准确地反映了体外BFS属性.
- 这种计算方法为传统的体外试验提供了可行的替代方案.
- 在模型可以帮助有效评估CAD/CAM材料属性,最大限度地减少材料浪费.
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