A Hyperelastic Approach for Finite Element Modelling Puncture Resistance of Needle Punched Nonwoven Geotextiles

作者：Saberi Elnaz^*; Najar Saeed Shaikhzadeh; Abdellahi Sayyed Behzad; Soltanzadeh Zeynab

来源：Fibers and Polymers, 2017, 18(8): 1623-1628.

DOI：10.1007/s12221-017-1157-y

• Puncture resistance
• Finite element analysis
• Hyperelastic material model
• Needle punched nonwoven geotextile
• Pin and CBR tests

Needle-punched nonwoven fabrics are the most common textile structures used as geotextiles. In most applications, geotextile layers are subjected to compressive forces perpendicular to their plane. These forces will lead to the deformation of the layers and eventually cause puncture. In this study, the puncture behavior of nonwoven fabrics was simulated based on hyperelastic model, using finite element method (FEM) and considering geotextile layer as a continuous surface. For this purpose, three needle-punched fabrics with different weights of 460, 715, and 970 gr/m(2) were selected and two tests of CBR (ASTM D6241) and Pin (ASTM D4833) were considered to evaluate the puncture process. Thus, puncture behavior of fabrics based on both of these tests were simulated using the ABAQUS software. Considering the puncture behavior in terms of stress-strain diagrams, results obtained from experiments and finite element analysis (FEA), showed good agreement. It was also shown that non-woven fabrics with higher weight exhibited higher puncture stress in both CBR and Pin tests. The mechanism of puncture at macroscopic scale obtained by finite element method was also qualitatively compared to that of experimental results.

• 出版日期2017-8