Time: Tuesday and Thursday 2:00 - 3:30 pm
Place: ECJ 1.214, University of Texas at Austin
Instructor: Rui Huang, WRW 117D, (512) 471-7558, ruihuang [at] mail.utexas.edu (ruihuang[at]mail[dot]utexas[dot]edu)
Lecture notes (coming soon)
Homewrok sets (coming soon)
A linear constitutive thermodynamic relation between thermodynamic force f and flux v.
v = Mf, where M is the phenomological coefficient.
How to constitute a nonlinear thermodynamic constitutive relation for an unknown system which we expect to exibit nonlinear behaviour?
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I am using exponent Drucker-Prager model at the moment, is there anyone can tell me where the follow exponent D-P eqation comes from originally?
(σ e)(σ e)=λ(σt)(σt)-3(λ-1)σmσt
Where λ= is hydrostatic stress sensitivity parameter and equal to σc/σt, σe is effective stress, σm is hydrostatic stress, σc, σt are stresses under compression and tension, respectively.
I am doing my master thesis on crash simulation of plywood (7 layers-orthotropic material) structures in buses using explicit LS-DYNA FE program. I would like to include failure in my model. Right now I am working on Mat_054_55 (MAT_ENHANCED_COMPOSITE_DAMAGE…..material model from LS-DYNA material library).
Mat_054_55 allows me to get failure by defining anyone of the following parameters,
In a recent rapid communication (see attached paper), using principles of pattern formation, we expose some simple stategies to reliably produce perfect long range order in self-assembling systems. Most self-assembling systems exhibit short ranged order. This imperfection is detrimental to several practical applications. It is almost always possible to produce perfect patterns in small domain sizes but self-assembly over a larger areal span results in defects.
I'm trying to model a composite structure with shell 99 element in Ansys.
I set the thickness and material no. in real constant and prepare an orthotropic material property for that. While ploting the result, as I expect to get the stresses among layers different from other points, but the result is a kind of uniform isotropic graph.
I don't know if any setting other than real constant and material property should be done to get a true result or not. and if I'm true then how can I read the true result.
I will appreciate any help.
