I have modeled a beam column joint with steel and concrete by using 5 parts. Is it essential to give contact between the 5 parts?. How to give material properties for ordinary concrete and fibre concrete?. please help me that how to give reverse cyclic load in ABAQUS.
with regards
B.Thanukumari
In this letter we obtain the finite-temperature structure
of 180^o domain walls in PbTiO_3 using a quasi-harmonic
lattice dynamics approach. We obtain the temperature dependence of
the atomic structure of domain walls from 0 K up to room
temperature. We also show that both Pb-centered and Ti-centered
180^o domain walls are thicker at room temperature; domain
wall thickness at T=300 K is about three times larger than that of
T=0 K. Our calculations show that Ti-centered domain walls have a
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MIT Dean of Engineering Subra |
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Dear All,
In one of my elastic-plastic simulations, I have used the Combined hardening model with half-cycle to model its plastic behaviour. So, I've fed in a list of values from experimental data. Now, I understand that ABAQUS uses certain parameters to generate the stress-strain curve from the data that I've provided.
Is it possible to find out these parameters used by ABAQUS?
Thanks in anticipation,
Aneesh
In this manuscript (available at http://arxiv.org/abs/1004.1765), we present a systematically improvable, linear scaling formulation for the solution of the all-electron Coulomb problem in crystalline solids. In an infinite crystal, the electrostatic (Coulomb) potential is a sum of nuclear and electronic contributions, and each of these terms diverges and the sum is only conditionally convergent due to the long-range 1/r nature of the Coulomb interaction.
In the study of thermoelastic actuation of dielectric elastomer, we can write the Helmholtz free-energy as a function of stretch ratio, nominal electric displacement and temperature (T).
The entropy (S) is the negative partial differential coefficient of W with respect of temperature (T). And we can see the change of S is due to three components: deformation, heat conduction and polarization. In an isothermal state, the deformation part has been fully investigated by Arruda and Boyce in 1993, but the polarization-induced entropy (Sp) has not been clearly stated.
Hi All,
Most exisiting failure critera delevolped for fiber composite laminates and they are rough estimations for fabric composite. I want to know if there is a suitable failure criterion for fabric composites.
Thanks
Azadeh
Dear all,
I have modeled a cyclic ball indentation problem in
Abaqus. The sphere has been modeled as axisymmetric rigid surface while
the plate is axisymmetric deformable. The material data fed in for the
plate has been obtained from low cycle fatigue experiments and the
combined hardening model using half-cycle has beem employed.
Apart from this, the loading is displacement-controlled and sphere
is the master surface while the plate is slave surface. The other
Amit Acharya and Kaushik Dayal
(To appear in Quarterly of Applied Mathematics)
This paper presents a generalization of traditional continuum approaches to liquid crystals and
liquid crystal elastomers to allow for dynamically evolving line defect distributions. In analogy with
recent mesoscale models of dislocations, we introduce fields that represent defects in orientational
and positional order through the incompatibility of the director and deformation ‘gradient’ fields.
Hi
I have a problem with the simulation of Mohr Coulomb problem. I want to set the properties of a sand. I use the experimental data from papers and i try to find the bearing capacity for a footing on sand. I set density ρ, E modulus of elasticity , ν Poissoin's ratio and for the Mohr Coulomb model i set φ shear strength, ψ dilatancy , c cohesion (a very small value=0.00001 ) for strain 0 . Does it need anything else? Does it need for hardening parameters any diagram for cohesion -plastic strain for the Mohr Coulomb model?
