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首页> 外文期刊>International journal of non-linear mechanics >Usability of finite elements based on the absolute nodal coordinate formulation for deformation analysis of the Achilles tendon
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Usability of finite elements based on the absolute nodal coordinate formulation for deformation analysis of the Achilles tendon

机译：基于Achilles肌腱变形分析的绝对节点坐标配方的有限元的可用性

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摘要

This work explores the modelling of soft tissues, particularly the Achilles tendon, using the absolute nodal coordinate formulation (ANCF).The anisotropic Gasser-Ogden-Holzapfel (GOH) potential energy function provided the necessary anisotropic elastic feature descriptions. A generalized one-dimensional Maxwell model described the viscoelastic effects. Finally, a parameter-based damage model characterized the effects of repetitive loading. We used an objectivity test to establish multibody system dynamics usability. The test ascertains whether or not the developed elements can adequately describe rigid body motion and therefore be applied to describe large deformation in whole bodies. Comparing our results against high-fidelity ANSYS 3D FEA solutions served as verification. To further ensure the validity of the obtained solutions, our results were also compared against test results. For modelling material behaviour, the developed ANCF elements demonstrated substantial fidelity, and simulation results agreed well with test results and results found in the literature.
机译：这项工作探讨了使用绝对节点坐标配方（ANCF）的软组织，特别是Achilles肌腱的建模。各向异性Gasser-Ogden-holzapfel（ogh）势能功能提供了必要的各向异性弹性特征描述。广义一维麦克斯韦模型描述了粘弹性效应。最后，基于参数的损伤模型表征了重复载荷的影响。我们使用了客观性测试来建立多体系系统动态可用性。测试确定开发的元件是否可以充分描述刚体运动，因此应用于整体中描述大变形。将我们的结果与高保真ANSYS 3D FEA解决方案进行比较，作为验证。为了进一步确保所获得的解决方案的有效性，我们的结果也与测试结果进行了比较。对于造型材料行为，开发的ANCF元素展示了大量保真度，并且仿真结果与文献中的测试结果和结果吻合得很好。

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