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Postdoc position at MIT: Thermal and mechanical properties of nanocomposites

Submitted by Markus J. Buehler on

A postdoctoral associate position at MIT is available immediately,
focused on the analysis and development of multifunctional thermal
management structures, by using theoretical and atomistic multiscale
modeling and simulation. This project specifically involves calculations
of thermal and mechanical properties of graphene based metal- and
polymer nanocomposites, with a focus on various aspects such as
interfacial transport properties, tunability, mutability and phonon
engineering. Additional aspects of the project relate to the general

Abaqus Subroutine and fortran

Submitted by moslempayandeh on
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Dear

I have problem with Abaqus 6.10 and fortran 11,0,6 on WIN 7 x64 platform

When I run Abaqus verification it pass all C++ Fortran  requirement but when it check for subroutine for standard case or explicit it has problem:

It is  std_user.log for error

Linking ['std_user.obj'] into user subroutine shared library

Experimental notch fracture testing to calculate KII

Submitted by laki on

Hi,

I am doing a v-notch fracture testing (experimental) with opening angles from 0,30,60,90,120 to 150 deg and need to calculate KII. I need a equation that could be used to calculate KII for both 0 deg and also for non-zero opening notch angles. I am using TestResources machine to do this shear testing and I will get results in terms of load vs. d. The material is PMMA. What could be the appropriate displacement/min or load to break the specimen.

Dislocation migration in carbon onions

Submitted by Jianyu Huang on

Phys. Rev. Lett. 105, 106102 (2010) 

What does a dislocation look like in a spherical geometry, and how does it migrate in such a structure? We report here the counterintuitive motion of the 1/2⟨0001⟩ edge dislocation in carbon onions from the outer surface to the inner core, i.e. from a low pressure surface to a high pressure core, rather than from the core to the surface as expected due to a surface image force. Maybe you can help us to explain this peculiar phenomenon.

Fabric Tensor

Submitted by gyanvikash on

I am studying the effect of intermediate microfabric on clay's mechanical behavior. In order to develope the constitutive model for clay considering its microfabric, I want to use fabric tensor. If any good paper or study material on fabric tensor is available then please send me.

Thanks