Two PhD positions are available at
Iowa State University to perform work on federally funded projects on phase-field
modeling of stress-induced phase transformations, surface-induced phenomena, and interaction between phase transformation
and plasticity using FEM. Positions can be either in Engineering Mechanics program in Aerospace Engineering Department (preferable) or in Mechanical Engineering Department.
The attached notes are written for a course on plasticity. When I update the posts, I will write a note on my twitter account: https://twitter.com/zhigangsuo.
Hi all,
Can anybody help me out running a VUMAT with double precision?
If I define my variables in VUMAT as double precision and run "abaqus user=... job=..." the values do not match those in the inp file.
On the other hand, if I run "abaqus double user=... job=... " I get the following error:
Abaqus Error: Abaqus/Explicit user subroutines cannot be supplied as an object
file when double precision is used.
Abaqus/Analysis exited with error(s).
I know maybe it's a stupid question but I'd really appreciate if someone could give me a hint.
Hi,
There is an assumption that nanoparticles (e.g., graphene or CNT) change the local properties of polymer (here, epoxy) around them, perturbing the polymer chains. Which (not too expensive) methods exist to explore this assumption experimentally? How can I study the atomistic scale structure of polymer around the graphene sheets, and compare it with rest of polymer?
Leon
Hi,
I am using a steady-state dynamic analysis procedure to model harmonic loading of a structure. I am investigating different material definitions. When I applied transversely isotropic stiffness using engineering constants, I saw a much different response than expected. So, as a test, I compared the following two models which gave DIFFERENT results:
1) Simple cylinder with linear elastic, isotropic material properties (E, v), structural damping (0.05) and density of water.
Dear Colleagues,
We recently have reported first measurements of surface stress evolution in a material as a function of uniaxial time dependent deformation and at temperatures upto 100 degree C using a new analytical technology, Nanomechanical Raman Spectroscopy developed in our lab (Interfacial Multiphysics Lab directed by Dr. Vikas Tomar at Purdue).
In particular, we wanted to bring to your attention the following publications:
hai friends,
me doing engineering design... my project tite is "interaction of stress intensity factor for perpendicular cracks" this is y final yr project....pls guide me finding problem & knowing about the fracture mechanics and the purpose of stress intenssity factor..i really need the ansys analysis procedure for creating perpendicular cracks... pls help me friends ...send some link or web page ..
PLS send details to my mail id ashwin.prabhu1990 [at] gmail.com
Applications are invited for the position of postdoctoral fellow in the area of computational biology, biomechanics, biophysics and rheology. A Ph.D. degree with relevant research experience in the following areas will be preferred:
- Nanomedicine design in silico/in vitro/in vivo
- Computational fluid dynamics (LBM, Immersed Boundary Method)
- Microfluidics and nanofluidics
- Soft matter physics, cell mechanics
- Statistical models for next generation sequencing
- Molecular dynamics
- MRI/PET imaging
