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用于生物医学应用的具有选定平面图案的柔性结构的建模与测试

Modeling and Testing of Flexible Structures with Selected Planar Patterns Used in Biomedical Applications.

作者信息

Marsalek Pavel, Sotola Martin, Rybansky David, Repa Vojtech, Halama Radim, Fusek Martin, Prokop Jiri

机构信息

Deparment of Applied Mechanics, Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Czech Republic.

Department of Surgical Studies, Faculty of Medicine, University of Ostrava, Dvorakova 7, 701 03 Ostrava, Czech Republic.

出版信息

Materials (Basel). 2020 Dec 30;14(1):140. doi: 10.3390/ma14010140.

DOI:10.3390/ma14010140
PMID:33396971
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7795973/
Abstract

Flexible structures (FS) are thin shells with a pattern of holes. The stiffness of the structure in the normal direction is reduced by the shape of gaps rather than by the choice of the material based on mechanical properties such as Young's modulus. This paper presents virtual prototyping of 3D printed flexible structures with selected planar patterns using laboratory testing and computer modeling. The objective of this work is to develop a non-linear computational model evaluating the structure's stiffness and its experimental verification; in addition, we aimed to identify the best of the proposed patterns with respect to its stiffness: load-bearing capacity ratio. Following validation, the validated computational model is used for a parametric study of selected patterns. Nylon-Polyamide 12-was chosen for the purposes of this study as an appropriate flexible material suitable for 3D printing. At the end of the work, a computational model of the selected structure with modeling of load-bearing capacity is presented. The obtained results can be used in the design of external biomedical applications such as orthoses, prostheses, cranial remoulding helmets padding, or a new type of adaptive cushions. This paper is an extension of the conference paper: "Modeling and Testing of 3D Printed Flexible Structures with Three-pointed Star Pattern Used in Biomedical Applications" by authors Repa et al.

摘要

柔性结构（FS）是带有孔图案的薄壳。结构在法线方向上的刚度是通过间隙形状降低的，而不是基于诸如杨氏模量等力学性能来选择材料。本文通过实验室测试和计算机建模展示了具有选定平面图案的3D打印柔性结构的虚拟原型。这项工作的目的是开发一个评估结构刚度及其实验验证的非线性计算模型；此外，我们旨在根据刚度：承载能力比确定所提出图案中的最佳图案。验证之后，经过验证的计算模型用于对选定图案进行参数研究。本研究选择尼龙 - 聚酰胺12作为适合3D打印的合适柔性材料。在工作结束时，给出了具有承载能力建模的选定结构的计算模型。所获得的结果可用于外部生物医学应用的设计，如矫形器、假肢、颅骨重塑头盔衬垫或新型自适应垫子。本文是会议论文“用于生物医学应用的具有三点星图案的3D打印柔性结构的建模与测试”的扩展，作者为Repa等人。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/9c4671c90bd6/materials-14-00140-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/9c4671c90bd6/materials-14-00140-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/619a899ed293/materials-14-00140-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/6f458b192718/materials-14-00140-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/bf20e702293f/materials-14-00140-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/1dc0a30f4504/materials-14-00140-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/f9fe3af31d5d/materials-14-00140-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/1a98eb3fd345/materials-14-00140-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/f2f9f2642bdf/materials-14-00140-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/df7913ceff40/materials-14-00140-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/e111f3caa332/materials-14-00140-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edc0/7795973/9c4671c90bd6/materials-14-00140-g012.jpg

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