How does one calculate the phonon dispersion relations from the output of a molecular dynamics simuation?
I have successfully calculated the complete phonon density of states using a fourier transform of the velocity autocorrelation function, but I am still confused as to how to calculate the particular phonon dispersion curves.
Thank you.
A recent paper on JMPS has seriously questioned the foundation of the SGP theory of Fleck and Hutchinson. The matter is not simple, but is it a good bench test for imechanica to discuss?
I am a freshman of researching the macro response of metals with micromechanics scheme. Now,I have to build a self-consistent modeling of plastic and viscoplastic for polycrystalline materials. However, it seems difficult for me as I have little knowledge of polycrystalline and its mechanics propertities.
If you know some systematic books or papers about my research area. please let me know. Your kindness will be great appreciated!!!
Nowadays I am analyzing a study of a hip prosthesis including the bone. I am making the FEA/FEM analysis by Pro/Mechanica software. Metallics materials are titanium alloy (Ti-6Al-4V) and Chromium-cobalt-molybdenum alloy (CoCr29Mo). So they are ductile materials. I understand the main load is the flexural load on the hip.
Hi everyone. I'm new to this forum and quite new with FEA.
Currently i'm trying to find compressive strength or maximum failure stress on a modeled brick. Is't possible? What parameters or properties do i need in hand in order to proceed?
Regards,
KenLo
Dear All,
I am a Masters Student in Material Science, I am supposed to do the Finite
Element modeling of PTFE material with few content of short carbon fibers. Could any of you please suggest the best,
1.Modeling method, its
2.Material parameters and
3.References of that best modeling method.
Would be really thankful and would be helpful for my studies as well.
Regards,
I am doing research on the stresses that are produced when a retainer (a thermoplastic sheet) is placed on the teeth. We've designed the project so that we take an initial scan of the sheet and a final "shifted" scan of the sheet. We'd like to compare, find the strain, and calculate the stress neccessary to produce this strain.
I was hoping to use FEA for this...is it possible? I have access to Abaqus and Ansys, and where can i find the commands that allow me to do this.
