Mechanical Behavior of Particle Reinforced Thermoplastic Matrix Composites Using Finite Element Modeling

Abstract

Particles are becoming increasingly popular reinforcing elements in products made by injection molding. Particles reinforcement allows the thermoplastic to be processed employing the same methods as those used for unreinforced thermoplastic. Ultrafine particles, whose diameters are comparable to the crystalline regions in the polymer, have a prominent reinforcing effect on the elastic properties of the polymer. Small particles adhere strongly to the polymer, which leads to a strong reinforcing effect. In particle reinforced thermoplastic matrix composites, loads are not directly applied to the particles but are applied to the matrix, and some of the applied loads are transferred to the particles. The process of transfer of load between particles and matrix depends on the strength of the interface. In this work, multiparticle composite model was analyzed under tensile load. The purpose of this work is to analyze the influence of particle diameter (the diameters of 19.61, 26.15, 39.22 and 78.45 m were used) on the Von Mises stress of glass particle reinforced thermoplastic nylon 66 matrix composite using finite element analysis (FEA). The second objective is to analyze the effect of particle packing (square, hexagonal and random arrangement) on nanocomposite behavior.

Effect of Broken Glass Particle on Stress Transfer of Nylon Matrix Composite

“…Fig. 4 represents the distribution of the Von Mises stresses in the damaged models, we notice that the stresses are not concentrated in all the particles, but in the particle broken with a high value compared to undamaged models [15].…”

“…The finite element software CASTEM was used to develop the models and generate the results. Composites with four different diameters of circular glass particles of 19.61, 26.15, 39.22 and 78.45 m were modeled (Table 1) [15]. Composites were modeled and meshed with triangular elements to achieve the best convergence and accuracy of the results.…”

“…For simplicity, it is assumed that all particles have the same diameter dp [17]. Due to axisymmetry, the specimen can be considered as a 2-D elastic body, Following parameters are used in all calculations [15]…”

The Optimum Design of Particulate in Composite Sheets Using Finite Element Method

“…Also, they used different particles size to show the effect of particle size on mechanical properties of composite materials, in addition, the effect of particles distribution was investigated using different arrangement. They noted that the square arrangement has highest effective stress than all arrangement [8].…”

Effect of Reinforcing Particle Shape on the Behavior of Composites Materials

“…The effective behavior of macroscopically isotropic particle-reinforced two-phase composites is primarily determined by the fabric behavior and volume fractions of the matrix and inhomogeneities. The details of the geometric arrangement of the constituents and, therefore, the shapes of the particles play solely secondary roles [7]; a decrease in the particle diameter (circular) does not have an effect on the composite [8]. The particles are used to increase the modulus of the matrix, reduce permeability, and reduce ductility.…”