Elastic stiffness analysis of a thermo-formed plain-weave fabric composite Part II: analytical models

Local damage in a 5-harness satin weave composite under static tension: Part II – Meso-FE modelling

“…The intra-yarn volume fraction ( ) used for the calculation of the homogenized material properties (Table 3) is 70% (constant through out the yarn sections), which is obtained from the 'WiseTex' software. The analytical homogenized elastic constants of the impregnated yarn are compared with the CCA [17] and show good correlation. The calculated homogenized micro-mechanical material properties are assigned to the yarn cross sections in their local co-ordinate system to account for the yarn crimp in the FE model.…”

Anisotropy in Woven Fabric Stress and Elongation at Break

“…Partly another approach to similar problem solution is used in ). Anisotropy of different fabric properties is often investigated for textile based composites, where rupture properties are very important, for example in (Hofstee & van Keulen, 2000). There are lots of possibilities how to go on in research on this topic, for example: a.…”

A summary review of mechanical properties prediction methods for textile reinforced polymer composites

“…Experimental measurements of fabric architecture on a plain weave carbon fibre reinforced thermoplastic were observed to fall within bounds of the geometry predicted using assumptions of maximum stretching or maximum crimp. Hofstee and van Keulen [33] used this geometric formalism in conjunction with a kinematic draping simulation in order to determine the deformed fabric architecture of a draped component to enable local stiffnesses in sheared regions to be determined. Closed form analytical expressions were developed such that stiffness was determined for each tow using both isostress and isostrain homogenization assumptions similar to those used in one-dimensional models discussed previously.…”

“…Some of the earliest examples of application of the FE method to mechanical evaluation of textile composite behaviour were conducted by Blacketter Fig. 6 Polar plots of stiffness according to the angle of applied loading for a carbon fibre/ polyphenylene sulphide composite (V f ¼ 50 per cent) calculated by Hofstee [33]: (a) an unsheared (+458) laminate and (b) the same material having been subjected to 358 inplane shear deformation (i.e. +27.58).…”

“…+27.58). E 1 was calculated assuming constant strain, E s assuming constant stress, and E V¼0 was predicted assuming maximum straightening (zero crimp) (Reprinted from reference [33] with permission from Elsevier) et al [27], who conducted three-dimensional FE analysis of a unit cell of a plain weave composite. The FE model of the unit cell consisted of 256 20noded hexahedral elements.…”