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rrahman's picture

A multiscale modeling scheme based on peridynamic theory

A multiscale modeling scheme based on peridynamic theory

Rezwanur Rahman

Postdoctoral fellow, Center for simualtion, visualization and real time prediction (SiViRt), University of Texas at San Antonio)

John Foster

Assistant Professor, Department of Mechanical Engineering, University of Texas at San Antonio

Anwarul Haque

Associate Professor, Department of Aerospace Engineering and Mechanics, University of Alabama

ABSTRACT

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Vikram Gavini's picture

A homogenization analysis of the field theoretic approach to the quasi-continuum method

Dear Colleagues,

I wish to bring to your attention my recent work with Liping Liu on "A homogenization analysis of the field theoretic approach to the quasi-continuum method" to appear in the Journal of the Mechanics and Physics of Solids. Below is the abstract and attached is the preprint of the article. I will very much appreciate your comments and suggestions.

A Homogenization Analysis of the Field Theoretic Approach to the Quasi-Continuum Method

Coupled thermo-structural analysis of CFRP using ANSYS

Hi everyone,

 does anyone know publications dealing with the coupled thermo-structural analysis (direct method) of CFRP using ANSYS?

A new idea and a not so new one

Two new papers grabbed my attention on my long unread list of journal tables of contents in Google Reader. 

1) The first was


Ideomechanics of transitory and dissipative systems associated with length, velocity, mass and energy
by G.C. Sih

where it is stated that

" One of the rules of the development of IDM is that the “flow of nature” takes precedent when deducting and/or constructing quantitative results. It is hoped that

azadpoor's picture

A recent paper about friction laws at the nanoscale

A very recent paper published a few minutes ago in Nature addresses the issue of friction laws at the nanoscale. Here is the abstract of the paper.Interested? here you can download the paper.

Nature 457, 1116-1119 (26 February 2009) | doi:10.1038/nature07748; Received 3 September 2008; Accepted 23 December 2008

Friction laws at the nanoscale

Yifei Mo1, Kevin T. Turner1,2,3 & Izabela Szlufarska1,3

ErwanVerron's picture

Recent papers on rubber mechanics

Here are some of my recent papers about mechanics of rubber material. They concern constitutive modelling, fatigue and fracture.

Marckmann G. et Verron E., Comparison of hyperelastic models for rubberlike materials, Rubber Chemistry and Technology, 79(5), 835-858, 2006.
https://www.rubber.org/MngmntWeb/NonSecure/RCTabstract.aspx?id=8214

Patrick J McCluskey's picture

An introductory paper on thermal combinatorial analysis of nano-scale materials

If you are interested in nano-calorimetry or combinatorial analysis, you might also find the following paper interesting. It was published as part of the MRS spring ‘06 meeting proceedings (http://www.mrs.org/s_mrs/sec_subscribe.asp?CID=6447&DID=175796&action=de...). This paper describes the parallel nano-differential scanning calorimeter (PnDSC), a new device for measuring the thermal properties of nano-scale material systems using a combinatorial approach.

Ashkan Vaziri's picture

Metallic sandwich plates subject to intense air shocks (by Ashkan Vaziri and John W. Hutchinson)

Recent results on fluid-structure interaction for plates subject to high intensity air shocks are employed to assess the performance of all-metal sandwich plates compared to monolithic solid plates of the same material and mass per area. For a planar shock wave striking the plate, the new results enable the structural analysis to be decoupled from an analysis of shock propagation in the air. The study complements prior work on the role of fluid-structure interaction in the design and assessment of sandwich plates subject to water shocks. Square honeycomb and folded plate core topologies are considered. Fluid-structure interaction enhances the performance of sandwich plates relative to solid plates under intense air shocks, but not as significantly as for water blasts. The paper investigates two methods for applying the loading to the sandwich plate-responses are contrasted for loads applied as a time-dependent pressure history versus imposition of an initial velocity. Click here for the full paper.

Ting Zhu's picture

Linking Interfacial Plasticity to Ductility: A Modeling Framework for Nanostructured Metals

Ting Zhu, Ju Li, Amit Samanta, Hyoung Gyu Kim and Subra Suresh

Nano-twinned copper exhibits an unusual combination of ultrahigh strength and high ductility, along with increased strain-rate sensitivity. We develop a mechanistic framework for predicting the rate sensitivity and elucidating the origin of ductility in terms of the interactions of dislocations with interfaces. Using atomistic reaction pathway calculations, we show that twin boundary (TB) mediated slip transfer reactions are the rate-controlling mechanisms of plastic flow. We attribute the relatively high ductility of nano-twinned copper to the hardenability of TBs as they gradually lose coherency during deformation. These results offer new avenues for tailoring material interfaces for optimized properties.

see the attached pdf file

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