Multiscale optimization is an attractive research field recently. For the most of optimization tools, design parameters should be updated during a close loop. Therefore, a simple Python code is programmed to obtain effective properties of Representative Volume Element (RVE) under Periodic Boundary Conditions (PBCs). It can compute the mechanical properties of a composite with a periodic structu...

Fiber failures which may exist in a continuous fiber· composite before the .composite is loaded or generated while the composite is loaded, introduce an additional strain component not included in existing continuous fiber models. Equations are developed which can be used to calculate the magnitude of this additional strain. A Finite Element Model (FEM), in the form of a Representative Volume E...

• 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...

An important application of simulating wave propagation in bone is the early detection osteoporosis. During course this disease cortical reduced and replaced by marrow, weakening increasing likelihood fractures [1]. Commonly, modeling problem to only mechanical effects. Recent research includes electrical magnetic effects as well [2-4]. In our previous contributions we introduced a two-phase ma...

In this paper, free vibration, modal and stress state analyses of honeycomb sandwich structures with different boundary conditions was investigated major factors affecting the frequencies stiffness due to material or parameter changes were determined. The representative volume element (RVE) method used in work analytically numerically validated by comparing obtained results those available lite...

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...

The fatigue properties of the Q450NQR1 steel were experimentally and computationally investigated. experimental results show a large scatter lifetime under high cycle loading. Based on Voronoi diagram crystal plastic model, polycrystalline representative volume element (RVE) model with pore or inclusion was constructed to analyze effect local stress–strain (HCF) very-high-cycle (VHCF) life. Com...