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基于胶原纤维束特性和细观结构网络模型的皮革粘弹性行为模拟

Simulation of Leather Visco-Elastic Behavior Based on Collagen Fiber-Bundle Properties and a Meso-Structure Network Model.

作者信息

Dietrich Sascha, Lykhachova Olga, Cheng Xiaoyin, Godehardt Michael, Kronenberger Markus, Meyer Michael, Neusius David, Orlik Julia, Schladitz Katja, Schulz Haiko, Steiner Konrad, Voigt Diana

机构信息

FILK Freiberg Institute gGmbH, Meißner Ring 1-5, 09599 Freiberg, Germany.

Department of Flow and Material Simulation, Fraunhofer Institute of Industrial Mathematics (ITWM), Fraunhofer-Platz 1, 67663 Kaiserslautern, Germany.

出版信息

Materials (Basel). 2021 Apr 10;14(8):1894. doi: 10.3390/ma14081894.

DOI:10.3390/ma14081894
PMID:33920286
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8070376/
Abstract

Simulation-based prediction of mechanical properties is highly desirable for optimal choice and treatment of leather. Nowadays, this is state-of-the-art for many man-made materials. For the natural material leather, this task is however much more demanding due to the leather's high variability and its extremely intricate structure. Here, essential geometric features of the leather's meso-scale are derived from 3D images obtained by micro-computed tomography and subsumed in a parameterizable structural model. That is, the fiber-bundle structure is modeled. The structure model is combined with bundle properties derived from tensile tests. Then the effective leather visco-elastic properties are simulated numerically in the finite element representation of the bundle structure model with sliding contacts between bundles. The simulation results are validated experimentally for two animal types, several tanning procedures, and varying sample positions within the hide. Finally, a complete workflow for assessing leather quality by multi-scale simulation of elastic and visco-elastic properties is established and validated.

摘要

基于模拟的皮革力学性能预测对于皮革的优化选择和处理非常重要。如今，这对于许多人造材料来说已是先进技术。然而，对于天然材料皮革而言，由于其高度变异性和极其复杂的结构，这项任务要求更高。在此，皮革中观尺度的基本几何特征是从通过微观计算机断层扫描获得的3D图像中推导出来的，并纳入一个可参数化的结构模型中。也就是说，对纤维束结构进行建模。该结构模型与从拉伸试验得出的束性能相结合。然后，在束结构模型的有限元表示中，通过束之间的滑动接触对皮革的有效粘弹性进行数值模拟。针对两种动物类型、多种鞣制工艺以及皮革内不同的样品位置，对模拟结果进行了实验验证。最后，建立并验证了一个通过弹性和粘弹性性能的多尺度模拟来评估皮革质量的完整工作流程。

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本文引用的文献

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Processing of collagen based biomaterials and the resulting materials properties.胶原基生物材料的处理及由此产生的材料性能。
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Tensile behavior and structural characterization of pig dermis.猪皮的拉伸性能与结构表征。
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