Abstract
In the present study, peridynamic (PD) open-hole tensile (OHT) strength prediction of fiber-reinforced composite laminate using energy-based failure criteria is conducted. Spherical-horizon peridynamic laminate theory (PDLT) model is used. Energy-based failure criteria are introduced into the model. Delamination fracture modes can be distinguished in the present energy-based failure criteria. Three OHT testing results of fiber-reinforced composite laminate are chosen from literatures and used as benchmarks to validate the present PD composite model with energy-based failure criteria. It is shown that the PD predicted OHT strength fits the experimental results quite well. From the predicted displacement field, the fracture surface can be clearly detected. Typical damage modes of composite, fiber breakage, matrix crack, and delamination, are also illustrated in detail for each specimen. Numerical results in the present study validate the accuracy and reliability of the present PD composite model with energy-based failure criteria.
Highlights
Peridynamics (PD) is found to have great advantages in dealing with fracture and damage problems in recent years [1]
The relative error of PD predicted strength for OHT1 is −5.19%. e PD predicted displacement field is shown in Figure 5. e fracture surface is very clearly detected from displacement field U1, which is relatively hard to see in FEM. ree typical damage patterns: fiber breakage, matrix crack for each layer, and delamination between each layer of
It can be seen that the most obvious fiber breakage is in 0° plies, and the interaction of the three damage modes leads to the final failure of the specimen
Summary
Peridynamics (PD) is found to have great advantages in dealing with fracture and damage problems in recent years [1]. Fracture and damage of fiber-reinforced composite (FRC) is a good application area of peridynamics. Hu et al [10, 11] proposed a homogenization-based peridynamic model for simulating fracture and damage in fiberreinforced composites and analyzed the dynamic effects induced by different types of dynamic loading. Oterkus and Madenci [12, 13] present an application of PD theory in the analysis of fiber-reinforced composite materials subjected to mechanical and thermal loading conditions. Hu and Madenci [20] present an application of peridynamics to predict damage initiation and growth in fiber-reinforced composites under cyclic loading. Ree fiber-reinforced composite OHT testing results from published literatures are modeled by using the present PD composite model with energy-based failure criteria. Ree fiber-reinforced composite OHT testing results from published literatures are modeled by using the present PD composite model with energy-based failure criteria. e PD OHTpredicted results are compared with testing results, and the PD OHT displacement field and damage modes are illustrated. e numerical analysis in the present study is carried out via GPU-parallel computing using PGI CUDA FORTRAN compiler
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