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open issues in interface mechanical modeling
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I'm brand new of this website, but I'm already very excited about it - it's really helpful.
ANSYS
Dear all,
Hello, I am working on stress analysis of a plate by ANSYS, I need to change material properties and real constants of some elements while the load is increased say from load step 1 to 1.1 and onwards. By using restart command the program either restart the analysis from zero loading with new values of MT and RC for the elements or keep the substeps of the load and does not change the MT and RCs.
Please note that the selected element does not support "kill" command.
Glass thermal stress and fracture
I have an investigation on glass fracture in fire.
I have a fortran program and it can calculate the thermal stress with steady-state temperature and force load using finite element method, Now I want to change it to transient temperature and force load.
I wonder which method should be taken? I'd like to calculate the fracture at last.
Please help me!
Thank you very much.
water psi at an angle
IF water pressure is pounds per square inch , and I have a tank of water with a slanting bottom that moves downward to a much smaller bottom with a hole in it, how do i calculate? How do i calculate psi for an angled bottom collecting into a smaller bottom?
mesh refinement for eigen-properties of a cracked body
It is a common technique in modelling cracked bodies with finite element method, to refine the mesh near the crack tip. It is mentioned in text books, mesh refinement is nessecary to increase the acuuracy of the computed stress intensity factor for the crack tip. Is meshrefinement nessecary for computing eigen-properties ( natural frequencies and natural modes ) as well as SIF? or eigen properties are not affected much by the near crack tip field?
Adiabatic shear banding
The subject of adiabatic shear banding is quite classical and the main assumption is that it consists of structural/mechanical instability in which the thermal softening effects play a dominant role in the generation of the band (Zener-Hollomon).
I would like to focus on the phase that precedes global failure, namely up to the peak stress or strain) at which the material starts to exhibit negative strain hardening.
Research Projects
Heat and mass transfer in tree-like network: Study the transport properties in the tree-like network (i.e. vascular system and brochinal tree of mammals), and explore the application of tree-like network in engineering;
Fractal analysis of permeability in porous media: set up microscopic seepage flow model for homogenous and heterogeneous porous media, derive analytical permeability with fractal theory;