An elastomer is a polymer with the property of viscoelasticity, generally having notably low Young's modulus and high yield strain compared with other materials.  Elastomers, in particular rubbers, are used in a wide variety of products ranging from rubber hoses, isolation bearings, and shock absorbers to tires. Rubber has good properties and is thermal and electrical resistant. We used carbon ...

A numerical method to compute the Effective Thermal Conductivity (ETC) of granular media surrounded by a stagnant fluid is presented. Based on geometry and size grains, Representative Volume Elements (RVE) created using Discrete Element Method (DEM) while ETC this RVE estimated with Fast Fourier Transform (FFT) computations. To bridge gap between DEM FFT, discretization algorithm (voxelization ...

This work attempts to develop a theoretical model in combination with the representative volume element (RVE) theory for realizing rapid fatigue limit prediction. Within thermodynamic framework, it is believed that two components, namely anelastic and microplastic behaviors, which correspond recoverable non-recoverable microstructural motions, contribute temperature variation during high-cycle ...

In this work, we used Dislocation Dynamics (DD) simulations to investigate the role of hierarchical defects microstructure ferritic-martensitic steel Eurofer97 in determining its hardening behavior. A Representative Volume Element (RVE) for DD simulation is identified based on typical martensitic lath size. Material properties b.c.c are determined, including dislocation mobility parameters. The...

Non-crimp-fabrics (NCF) are promising materials in aerospace applications. The complex internal structure of NCF composites could influence the in-plane performances, which needs to be comprehensively studied. novel three-dimensional (3D) meso-scale repeated unit cell (RUC) models were proposed for biaxial based on Finite Element (FE) method conduct a systematic parameter study, including layup...

• Simulation-based multi-scale statistical analysis of stress and strain reveals the prevailing distributions. The fundamental origins local statistics are identified. method is seen to give guidance for rational design structural integrity. Multiscale stresses strains in polycrystalline metals always inhomogeneous. In this study, a rate-independent crystal plasticity formulation was implemente...

A multiscale approach [1] that couples the finite-element method (FEM) and discrete-element (DEM) is employed to model analyse earthquake fault rupture-soil-foundation interaction (FR-SFI) problem. In approach, soil constitutive responses are obtained from DEM solutions of representative volume elements (RVEs) embedded at FEM integration points so as effectively bypass phenomenological hypothes...

Polymer-matrix composites are widely used in various industries due to their high specific strength and stiffness. However, the void formation is inevitable as a by-product during manufacturing processes, which may have negative effects on its mechanical properties. The purposes of this paper quantitatively evaluate influence voids anisotropic elastic properties provide corresponding theoretica...

Abstract This work investigates the possibility of applying two-scale computational homogenization to rod lattice structures emerging, for instance, from additive manufacturing. The influence number unit cells within representative volume element (RVE), thus, RVE’s size on homogenized mechanical response is studied occurring microscopic structural instabilities. Therein, macro-scale, described ...