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 ...

Abstract Dual-phase steels (DP steels) consist of ferrite and hard martensitic phase. For the high strength good formability, they are widely used in automotive applications. Compared with DP lower strength, DP1180 is more special for volume fraction martensite higher than that ferrite. In this paper, evolving plastic yielding behaviours insight into their microscale mechanisms were studied by ...

The accurate prediction of the thermomechanical properties newly developed polymer composites is important in determination their possible areas application. In this study, a 3D model representative volume element (RVE) with different wood flour weight ratios (5, 10, 15, 20, 25 and 30 %) was used to develop composites. Micromechanical material modelling software (Digimat) conjunction finite ana...

Effective elastic properties of a defected solid with distributed cohesive micro-cracks are estimated based on homogenization of the Dugdale–Bilby–Cottrell–Swinden (Dugdale–BCS) type micro-cracks in a two dimensional elastic representative volume element (RVE). Since the cohesive micro-crack model mimics various realistic bond forces at micro-scale, a statistical average of cohesive defects can...

• 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...

Abstract It is well established that large temperature gradients cause strong textures in as-built metal parts manufactured via laser beam powder bed fusion. Columnar grains with a preferred crystallographic orientation dominate the microstructure of such materials resulting pronounced anisotropic mechanical behavior. Such are often studied help tensile tests and corresponding numerical simulat...