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?
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?
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.
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;
Browsing through past themes, I realize that this is the third time the topic of experimental mechanics at the nanoscale has been highlighted in the jClub forum. There are many problems that require experimental research at the nanoscale that we can do this a few more times without being repetitive. I would like to focus this discussion on the fundamental issue of friction.
Abstract – A data analysis procedure has been developed to estimate the contact area in an elasto-plastic indentation of a thin film bonded to a substrate. The procedure can be used to derive the elastic modulus and hardness of the film from the indentation load, displacement, and contact stiffness data at indentation depths that are a significant fraction of the film thickness. The analysis is based on Yu’s elastic solution for the contact of a rigid conical punch on a layered half-space and uses an approach similar to the Oliver-Pharr method for bulk materials.
Hi
i am trying to simulate hot compression behaviour of a titanium alloy. in this investigation i consider this material as strain rate and temperature dependent. also i consider all kind of heat transfer like conduction between cylinder and Die also cylinder and enviroment.
can any body help me in detailed, that what kind of mesh is the most appropriate one for this analysis.(Reduction in height is 50%)
Could anyone briefly explain what is the difference between "Shear Locking" and "Membrane Locking". Does this apply to plain strain elements?
Thank you.
