Abstract

Nonwoven fabrics usually exhibit a more sophisticated behavior against force compared to other fabrics. This paper deals with a new method to simulate the bursting behavior of nonwoven fabrics. To this aim, the spunbonded nonwoven samples in different mass per unit area of 30, 50, 70 and 90 g/m² were prepared. At the first step, the tensile tests in different directions were conducted on a sample and the elastic (Young’s modulus and Poisson’s ratio) and plastic properties were extracted from the result of tensile tests. In the next step, it was tried to simulate the same tensile tests using the finite element method known as FEM. To calibrate the FEM model the damage parameters of samples were determined by trial and error. Finally, the maximum force in the bursting test for all samples was predicted using the prepared FEM model and the absolute relative error for samples of 30, 50, 70 and 90 g/m² were 14.90%, 0.64%, 6.05% and 7.13%, respectively.

摘要

与其他织物相比，非织造织物通常在抵抗力方面表现出更复杂的行为。本文提出了一种新的方法来模拟无纺布的破裂行为。为此，纺粘非织造样品的单位面积质量为30、50、70和90 g / m ²准备好了。第一步，对样品进行不同方向的拉伸试验，并从拉伸试验的结果中提取出弹性（杨氏模量和泊松比）和塑性。在下一步中，尝试使用称为FEM的有限元方法模拟相同的拉伸试验。为了校准FEM模型，通过反复试验确定样品的损伤参数。最后，使用准备好的FEM模型预测了所有样品在爆破试验中的最大力，30、50、70和90 g / m ^2的样品的绝对相对误差为14.90％，0.64％，6.05％和7.13％ ， 分别。