Wrinkling in engineering fabrics: a comparison between two different comprehensive modelling approaches.

Wrinkling in engineering fabrics: a comparison between two different comprehensive modelling approaches.
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工程织物的皱纹:两种不同的综合建模方法之间的比较。

DOI:
10.1098/rspa.2018.0063
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发表时间:
2018-08
期刊:
Proceedings. Mathematical, physical, and engineering sciences
影响因子:
--
通讯作者:
Turco E
Turco E
中科院分区:
其他
文献类型:
--
作者:
Giorgio I;Harrison P;dell'Isola F;Alsayednoor J;Turco E

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我们认为两个“全面的”工程织物建模方法。我们区分这两种方法使用术语“半离散”和“连续”,反映他们的性质。我们展示了一个拟合过程,用于识别的半离散模型的预测,其参数依次拟合到实验数据的连续模型的本构参数。然后,我们检查的连续模型的有效性,通过验证半离散和连续模型的预测,使用以前没有使用的测试用例在识别过程中的对应关系。这两种建模方法的预测进行了比较,对全场的实验运动学数据,使用立体数字图像相关技术,并与测得的力的数据。作为一个降阶模型,并在一个隐含的,而不是一个显式的有限元代码中实现,连续体模型需要显着更少的计算能力比半离散模型,因此可以用来更有效地探索工程织物的机械响应。
We consider two ‘comprehensive’ modelling approaches for engineering fabrics. We distinguish the two approaches using the terms ‘semi-discrete’ and ‘continuum’, reflecting their natures. We demonstrate a fitting procedure, used to identify the constitutive parameters of the continuum model from predictions of the semi-discrete model, the parameters of which are in turn fitted to experimental data. We, then, check the effectiveness of the continuum model by verifying the correspondence between semi-discrete and continuum model predictions using test cases not previously used in the identification process. Predictions of both modelling approaches are compared against full-field experimental kinematic data, obtained using stereoscopic digital image correlation techniques, and also with measured force data. Being a reduced order model and being implemented in an implicit rather than an explicit finite-element code, the continuum model requires significantly less computational power than the semi-discrete model and could therefore be used to more efficiently explore the mechanical response of engineering fabrics.
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