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Coefficient of Thermal Expansion in contrained films
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A cohesive law for carbon nanotube/polymer interfaces based on the van der Waals force
A cohesive law for carbon nanotube/polymer interfaces based on the van der Waals force (JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 54 (11): 2436-2452 NOV 2006)
Authors: Jiang, L.Y., Huang, Y., Jiang, H., Ravichandran, G., Gao, H., Hwang, K.C. and Liu, B.
Mechanical threshold stress model for 6061-T6 aluminum
Our paper on the Mechanical threshold stress (MTS) model for 6061-T6 aluminum has been accepted by JoMMS. There are several things of interest in the paper:
1) The use of a phonon drag model to predict the sharp increase in flow stress at strain rates above 10,000 /s. This behavior is seen in a number of materials and is hard to fit using standard power law plasticity models. Our model does a good job in this regard.
Interfacial moisture diffusion using cohesive zone elements
Hello every body,
As most of you know, fracture mechanics of polymer materials needs a special consideration of the viscoelastic material properties. Especially under thermomechanical loading the role of glass transition temperature T_g is very important. That is why people try to characterize the material with different methods including stress relaxation based on Time-Temperature superposition or DMA test.
Viscoelastic (generalized maxwell) model in MSC.Marc or ABAQUS
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I am trying to use gerenalized maxwell viscoelastic model for polyimide polymer films (Kapton) in MSC Marc (or ABAQUS). I have never used the prony series representation of the maxwell model (hereditary integral approach). Has anyone ever used MSC Marc to incorporate the prony series relaxation to the material? or ABAQUS? Here is my game plan for doing this:
Molecular Dynamics Simulation of Small Metallic Nanowires
Attached is a post-print of one of my journal papers submitted in 2005. A brief description of my paper is as follows:
Resdiual Stressed Indentation
How can we see load dipslacement cyrve of residual stressed material. I mean I m interested in extracting indentation properties from ABAQUS for material which has got some pre stress in terms of residual stress. What is procedure of assigning residual stress to some material in ABAQUS?