Onset of Matrix Cracking in Fiber Reinforced Polymer Composites: A Historical Review and a Comparison Between Periodic Unit Cell Analysis and Analytic Failure Criteria

Fluid-structural design analysis for composite aircraft wings with various fiber properties

“…The microscale analysis consists of four independent analyses. First, periodic unit cell (PUC) (Okabe, et al, 2015) analysis based on a finite element analysis (FEA) is performed to predict the mechanical properties of the unidirectional laminate. Second, the spring element model (SEM) (Okabe, et al, 2005) is used to estimate the longitudinal tensile strength of the unidirectional laminate.…”

“…For materials such as composites with periodic microstructures, physical properties are estimated using a homogenization method. In this study, we performed PUC analysis (Okabe, et al, 2015) based on a finite element approach, where the mechanical properties of various composite materials are estimated from the properties of their constituent fibers and matrix resin. The fiber volume fraction Vf was fixed to be 0.56, and the estimated mechanical properties of unidirectional composite ( ,…”

“…The PUC simulation (Okabe, et al, 2015) can be also used to determine the tensile and compressive strengths in the transverse direction and the in-plane shear strength of the unidirectional laminate. It is assumed that the fiber is a rectangular anisotropic elastic body with in-plane isotropic properties, that the resin is an isotropic visco-elasto-plastic body.…”