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首页> 外文期刊>Journal of Materials Engineering and Performance >Experimental Validation of Numerical Simulations of a New-Generation NiTi Endodontic File Under Bending
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Experimental Validation of Numerical Simulations of a New-Generation NiTi Endodontic File Under Bending

机译：弯曲下新一代NITI牙髓锉刀数值模拟的实验验证

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摘要

The superelasticity of NiTi shape memory alloy has been used in endodontics since the 1990s. To study the mechanical behavior of endodontic instruments, a traditional approach consists in experimental investigations. However, finite element analysis constitutes another way to assess their mechanical behavior and to facilitate their design. The main aim of this study is to compare experimental and numerical bending results on different structures (NiTi wire, spreader, and instruments) to estimate the reliability of the finite element simulations. These investigations were carried out as follows. Firstly, experimental material parameters identification was performed using NiTi wires. These parameters were implemented in an appropriate NiTi model. Bending was numerically applied to the meshed structures generated by the finite element method. Experimental tests were performed on real structures under bending, with exactly the same loading, in order to compare experimental and numerical results. These results were in good agreement for each of the considered structures. This enabled the validation of the simulation results and the use of simulations to design new endodontic instruments.
机译：自20世纪90年代以来，NITI形状记忆合金的超弹性已被用于牙髓性学。为了研究牙髓仪器的力学行为，传统方法包括实验研究。然而，有限元分析构成了评估其机械行为的另一种方法，并促进其设计。本研究的主要目的是将实验性和数值弯曲结果与不同的结构（NITI线，吊具和仪器）进行比较，以估算有限元模拟的可靠性。这些调查如下进行。首先，使用NITI线进行实验材料参数识别。这些参数在适当的NITI模型中实现。数值上施加到由有限元方法产生的网状结构上的数量。在弯曲下的实际结构上进行实验测试，以完全相同的负载，以比较实验和数值结果。这些结果对每个所考虑的结构都很好。这使得仿真结果验证和使用模拟来设计新的牙髓仪器。

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