A second gradient formulation for a 2D fabric sheet with inextensible fibres
A second gradient formulation for a 2D fabric sheet with inextensible fibres
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具有不可延伸纤维的二维织物片材的第二梯度配方
DOI:
10.1007/s00033-016-0701-8
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
N. L. Rizzi
中科院分区:
文献类型:
--
作者:
L. Placidi;L. Greco;Bucci S;E. Turco;N. L. Rizzi
We present numerical simulations of rectangular woven fabrics made of two, initially orthogonal, families of inextensible fibres. We consider an energy functional which includes both first and second gradients of the displacement. The energy density is expressed in terms of the angles between the fibres directions, using trigonometric functions and their gradients. In particular, we focus on an energy density depending on the squared tangent of the shear angle, which automatically satisfies some natural properties of the energy. The numerical results show that final configurations obtained by the second gradient energies are smoother than the first gradient ones. Moreover, we show that if a second gradient energy is considered, the shear energy is better uniformly distributed.
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DOI:
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2016
期刊:
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