Elasto-Plastic Analysis of the Impact Performance of Woven Fabric Composites

Abstract

The impact performance of laminated plain-woven fabric composites was analysed here using the elasto-plastic constitutive law, which can account for the anisotropic and asymmetric properties of fibre-reinforced plastics. The isotropic yield criterion was modified to account for the anisotropic and asymmetric initial yielding, while the kinematic hardening law with anisotropic evolution of back-stress was used for the anisotropic hardening behaviour. The impact tests were performed on laminated plain-woven composites. The simulation results for the impact tests compared well with experimental results.

Experimental evaluation and constitutive modeling of non-proportional deformation for asymmetric steels

“…(9)-(14) and the values of the coefficients are listed in Tables 3 and 4, respectively. It may be noticed that the values of A and B are not interdependent as it was assumed in Ryou et al (2007) and Lee et al (2008). When a = A = B = 1, C = 3 and k 1 = k 2 = 0, the new yield criterion reduces to the Mises yield criterion.…”

“…The expressions for the six coefficients are derived as Ryou et al (2007) and Lee et al (2008) have also proposed a criterion similar with Eq. (8) by incorporating linear terms to account for yield asymmetry, however, they assumed A 2 = B while they are independent in the present modification.…”

Vibrations of composite structures: Finite element and analytical investigation

“…[21][22][23][24] The presence of these openings on the one hand reduces the rigidity of the structure and on the other hand reduces its weight. [25][26][27][28][29] This makes its effects on the vibrational behavior of the shells unpredictable and should be taken into account in the design of such structures. 30 Unlike complete shells (without openings) which have been considered by various researchers and various theories have been proposed for their analysis; due to their complexity, apertured shells have been less analyzed and even semi-analytically, and most studies have been limited to numerical methods or laboratory tests.…”