Identification of dynamic load for prosthetic structures
Identification of dynamic load for prosthetic structures
复制标题
假肢结构动态载荷的识别
DOI：
10.1002/cnm.2889
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发表时间：
2017-12
影响因子：
2.1
通讯作者：
Qing Li
中科院分区：
文献类型：
--
作者：
Dequan Zhang;Xu Han;Zhongpu Zhang;Jie Liu;Chao Jiang;Nobuhiro Yoda;Xianghua Meng;Qing Li
动态载荷存在于众多的生物力学系统中，其识别是表征系统动力学行为和研究系统生物力学后果的关键问题。本研究旨在确定牙科修复结构中的动态载荷，即3单元种植体支持的固定部分义齿（I-FPD）和牙齿支持的固定部分义齿。通过特定患者的计算机断层扫描图像构建三维有限元模型。提出了一种动态载荷识别的正演算法和正则化技术。为了验证所提出的识别方法的有效性，对I-FPD和牙齿支持的固定部分义齿结构进行了研究，以确定动态载荷。为了验证逆识别的结果，开发了一个实验测力系统，通过使用三维压电传感器来测量在体内I-FPD结构中的动态载荷。计算识别的负载与不同的噪声水平，以确定其对识别精度的影响。计算了所测载荷与所识别载荷之间的误差，以评估所提出的方法在生物力学工程中的实用性。这项研究预计将作为一个示范作用，在确定生物医学系统中的动态负载，其中直接在体内测量可能是相当苛刻的，在临床上感兴趣的一些领域。
Dynamic load exists in numerous biomechanical systems, and its identification signifies a critical issue for characterizing dynamic behaviors and studying biomechanical consequence of the systems. This study aims to identify dynamic load in the dental prosthetic structures, namely, 3‐unit implant‐supported fixed partial denture (I‐FPD) and teeth‐supported fixed partial denture. The 3‐dimensional finite element models were constructed through specific patient's computerized tomography images. A forward algorithm and regularization technique were developed for identifying dynamic load. To verify the effectiveness of the identification method proposed, the I‐FPD and teeth‐supported fixed partial denture structures were investigated to determine the dynamic loads. For validating the results of inverse identification, an experimental force‐measuring system was developed by using a 3‐dimensional piezoelectric transducer to measure the dynamic load in the I‐FPD structure in vivo. The computationally identified loads were presented with different noise levels to determine their influence on the identification accuracy. The errors between the measured load and identified counterpart were calculated for evaluating the practical applicability of the proposed procedure in biomechanical engineering. This study is expected to serve as a demonstrative role in identifying dynamic loading in biomedical systems, where a direct in vivo measurement may be rather demanding in some areas of interest clinically.
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影响因子：
4.1
作者：
L. Mahéo;V. Grolleau;G. Rio
通讯作者：
L. Mahéo;V. Grolleau;G. Rio
DOI：
10.1002/cnm.1358
发表时间：
2011-08
影响因子：
2.1
作者：
T. Ohkami;K. Maruden;S. Koyama
通讯作者：
T. Ohkami;K. Maruden;S. Koyama
影响因子：
4.4
作者：
Field, Clarice;Li, Qing;Swain, Michael
通讯作者：
Swain, Michael
DOI：
10.1002/cnm.1465
发表时间：
2012-06
影响因子：
2.1
作者：
A. Manzoni;A. Quarteroni;G. Rozza
通讯作者：
A. Manzoni;A. Quarteroni;G. Rozza
DOI：
10.1201/9780203494486
发表时间：
2003-06
期刊：
--
影响因子：
--
作者：
Gui-rong Liu;Xu Han
通讯作者：
Gui-rong Liu;Xu Han