multiscale – TechConnect Briefs

Multiscale Simulation of Unidirectional Carbon Fiber Reinforced Polymer Strength

Cornwell H, Lima L, Souza F, MultiMechanics, US

Finite element (FE) analysis has become increasingly important for mechanical design and the development of new advanced materials. Being able to predict structural performance accurately and efficiently can circumvent the extensive time and cost of [...]

Modeling Failure in Fiber-Reinforced Composite Tubes using TRUE Multiscale technology

Souza F, Castro L, Neves K, Lima L, Cornwell H, Multi, US

Finite element analysis has become increasingly important for mechanical design and the development of new advanced materials. Being able to predict structural performance accurately and efficiently can circumvent the extensive time and cost of repetitive [...]

The Coupled Electro-Mechanical Behaviour of Nanocomposites

Wernik J.M., Meguid S.A., University of Toronto, CA

In the past two decades, practical realisation of composites began to shift from microscale-reinforced composites to nano-reinforced composites using carbon nanotubes (CNTs). There are a number of advantages that result from dispersing CNTs into polymeric [...]

Optimizing Multiscale Networks for Transient Transport in Nanoporous Materials

Nilson R.H., Griffiths S.K., Sandia National Laboratories, US

Hierarchical nanoporous materials afford the opportunity to combine the high surface area and functionality of nanopores with the superior charge/discharge characteristics of wider transport channels. In the present paper we optimize the apertures and spacing [...]

From Radar to Nodar

Falessi C., Fiorello A.M., Di Carlo A., Terranova M.L., SELEX Sistemi Integrati, IT

Photonics and Nanotechnologies are emerging revolutionary technologies that will provide a revolution in the sectors of sensors and radar systems. SELEX Sistemi Integrati intends to face this evolution as a leader by proactively supporting and [...]

Bridging Domain Multiscale Method

Xiao S.P., Hou W.Y., The University of Iowa, US

A bridging domain method for coupling continuum models with molecular models is described. In this method, the continuum and molecular domains are overlapped in a bridging subdomain, where the Hamiltonian is taken to be a [...]

Finite Temperature Quasicontinuum Method for Thermal and Mechanical Analysis of Silicon Nanostructures

Tang Z., Zhao H., Li G., Aluru N.R., University of Illinois at Urbana-Champaign, US

We formulate a finite temperature quasicontinuum method to calculate the thermodynamic and elastic properties of crystalline silicon as well as the mechanical response of silicon nanostructures subjected to externally applied forces. We solve the continuum [...]

Multi-scale, Mechano-biological Model of Nanoparticle Toxicity

Jenkins J., Pant K., Hood J., Sundaram S., CFD Research Corporation, US

Multiscale simulation of the toxic physiological effects of short and long term exposure to nanoparticles (NP) requires a unified quantitative understanding of NP deposition, partitioning of NP within the body (lung, liver, spleen, and brain), [...]

Multiscale Treatment of Thin-Film Lubrication

Wu Z-B, Diestler D.J., Zeng X.C., Chinese Academy of Sciences, CN

A multiscale technique that combines an atomistic description of the interfacial (near) region with a coarse-grained (continuum) description of the far regions of the solid substrates is proposed. The new hybrid technique, which represents an [...]

Multiscale Computation of Fluid and Ion Transport in Nanochannels: The Effect of Partial Charges

Joseph S., Chatterjee A.N., Aluru N.R., Beckman Institute of Advanced Science and Technology, US

We demonstrate a hierarchical multiscale methodology to solve ion transport in nanoscale channels and show that the partial charges from quantum calculations significantly alter transport properties and I-V plots for electrolytes in confined geometries. Effects [...]