\(\varvec{N}\)-Layer concentric cylinder model (NCYL): an extended micromechanics-based multiscale model for nonlinear composites

摘要: A validated multi-scale computational mechanics framework for progressive failure modeling of composite structures is developed. Zhang and Waas (Acta Mech 225(4–5):1391–1417, 2014) proposed a micromechanics-based two-scale multiscale model which able to predict the nonlinear response composite. Their micromechanics analysis uses analytical solutions derived from concentric cylinder along with generalized self-consistent find effective properties unidirectional fiber reinforced composites, are dependent on constituent level fiber–matrix mechanical volume fraction. In this model, material represented by an inner core outer matrix annulus. It should be noted that 2-CYL can extended any number \((N-1)\) layers in general, keeping fraction constant, hence called N-cylinder (NCYL), analytically calculate strain stress field within cylinders given applied remote field, acting boundary cylinder. The spatial variation fields key determinants damage hence, they need predicted accurately. advantage NCYL found discrete manner each layer evolution localized at particular matrix. These results used sub-scale global scale. This work based full solution, it delivers distinct analysis. That is, high fidelity efficiency gained same time.