The mechanical response of isotropic elastoplastic materials containing random distributions initially spherical voids is investigated computationally based on Fast Fourier Transform simulations. Numerical limit-analysis simulations at constant stress triaxiality allow to determine the yield surfaces, leading in particular determination a Representative Volume Element size for onset coalescence...

Abstract In this paper, a three-dimensional thermo-viscoelastic constitutive equation is used to simulate and analyze the hot stamping process of thermoplastic resin matrix composites. Dynamic mechanical analyzer (DMA) was measure relaxation behavior at different temperatures. Then, times weight factors were obtained by regression analysis data using genetic intelligent algorithm. According cla...

There is an increased demand for cement nanocomposites in the twenty-first century due to their composition, higher strength, high efficiency, and multiscale nature. As carbon nanotubes (CNTs) possess extremely resilience, stiffness, inclusion of small quantities concrete mix makes them a multifunctional material. A molecular level understanding significant capacitate macrolevel properties thes...

Biodegradable scaffolds play a critical role in therapeutic tissue engineering, in which the matrix degradation and tissue ingrowth are of particular importance for determining the ongoing performance of tissue-scaffold system during regenerative process. This paper aims to explore the mechanobiological process within biodegradable scaffolds, where the representative volume element (RVE) is ext...

Carbon nanotubes (CNTs) possess excellent mechanical properties, such as high stiffness, strength, resilience etc., and may become an ideal reinforcing material for the development of nanocomposites. In this paper, we establish a finite element model of the volume representative element (RVE) for CNT-reinforcing composites and evaluate their mechanical properties based on the Equivalent Homogen...

In this paper, we present our numerical simulation capability, developed within the Abaqus/Standard environment, for modeling steady-state wave propagation through soft dielectric elastomer composites. Specifically, we will discuss (a) a nonlinear user-element subroutine (UEL) to simulate the coupled electric-displacement response of these soft materials, (b) a user MPC subroutine to enforce co...

This work proposes, by a micromechanical approach, to simulate the effects of humid tropical aging on unidirectional composite (E-glass fibers/epoxy) taking into account an interphase region. An area (500 nm width) is identified AFM measurements around each fibre at initial state. During ageing this increases up 1 µm width. Numerical micro-models, using ABAQUS™, are developed predict mechanical...

We present a micro-macro method for the simulation of large elastic deformations of plant tissue. At the microscopic level we use a discrete element model to describe the geometrical structure and basic properties of individual plant cells. The macroscopic domain is discretized using standard finite elements, in which the unknown macroscopic material properties (the stress-strain relation) are ...

We present a computational algorithm for solving the recently developed finite-deformation continuum dislocation dynamics theory of mesoscale plastic deformation single crystals (Starkey et al., 2020). This CDD is based on vector density representation dislocations governed by curl-type transport-reaction equations subjected to divergence-free constraint appropriate density. These evolution are...