Nonlinear Mechanics of Surface Growth for Cylindrical and Spherical Elastic Bodies
This paper is dedicated to the memory of my friend Professor Bill Klug whose life was tragically cut short on June 1, 2016.
research
Plasticity model in Abaqus to capture the continues plastic strain of granular material under triaxial cyclic loading?
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I am working on modelling ballast aggregates under triaxial loading. Confining pressure applied in the intermediate and minor principal direction and cyclic compression load applied in the major principal axis direction. I wanted to capture the continues plastic strain (PS) with cycles (N). My test results show that the PS increase with N up to about 10,000 cycles and the rate of strain slowly diminish for later cycles and almost stay constant after N=100,000. What available model in Abaqus can be used to get this behaviour. I have to run my analysis at least for 10,000 cycles.
A Unification of the Concepts of Variational Iteration, Adomian Decomposition and Picard Iteration method; and a Local Variational Iteration Method
This paper compares the variational iteration method (VIM), the Adomian decomposition method (ADM) and the Picard iteration method (PIM) for solving a system of first order nonlinear ordinary differential equations (ODEs). A unification of the concepts underlying these three methods is attempted by considering a very general iterative algorithm for VIM. It is found that all the three methods can be regarded as special cases of using a very general matrix of Lagrange multipliers in the iterative algorithm of VIM.
A Comparison of the Elastic Properties of Graphene- and Fullerene-Reinforced Polymer Composites: The Role of Filler Morphology and Size
A recently published paper in mechanical properties of graphene polymer nanocomposites via MD simulations, by Chang-Tsan Lu, Asanka Weerasinghe, Dimitrios Maroudas and Ashwin Ramasubramaniam.
Multiscale real-space quantum-mechanical tight-binding calculations of electronic structure in crystals with defects using perfectly matched layers
<p>We consider the scattering of incident plane-wave electrons from a defect in a crystal modeled by the time-harmonic Schrödinger equation. While the defect potential is localized, the far-field potential is periodic, unlike standard free-space scattering problems. Previous work on the Schrödinger equation has been almost entirely in free-space conditions; a few works on crystals have been in one-dimension. We construct absorbing boundary conditions for this problem using perfectly matched layers in a tight-binding formulation.
Mode-Mixity computation in 'Interface crack'
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Hello everybody,
Nine papers about fatigue modelling of short fiber composite
Recently, we have published a series of nine papers about modelling fatigue and damage in short fiber composites. Together, they provide a complete description of modelling of such materials including wavy fiber composites; starting from appropriate homogenization method to component level fatigue simulation. Discussion and feedback on the papers is welcome.
Writing UHYPER for photo-thermal sensitive hydrogels described in the thermodynamic framework?
Hello
I`d like to write a UHYPER for photo-thermal sensitive hydrogels described in the thermodynamic framework. But the photo-chemical term in the energy equation is 7order greater than the others. The other terms are related to stretch and mixing energy they exist also in the temperature sensitive hydrogels energy equations and their UHYPER is valid. I have checked all the coefficients, their orders are all correct.
Is it something wrong with modeling, or I have made a mistake?
A novel impact identification algorithm based on a linear approximation with maximum entropy
Paper Accepted for Publication in Smart Materials and Structures
N. Sanchez, V. Meruane, A. Ortiz-Bernardin, “A novel impact identification algorithm based on a linear approximation with maximum entropy.”
ABSTRACT
Fatigue analysi to get crack initiation life using ABAQUS/CAE
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Dear All,
for LCF analysis to get crack initation life for simple plate with central hole specimen.
I used direct cyclic approach but getting error as o/p "CYCLEINI" is not available for your element type.
with fe-safe fatigue tool i got the crack initiation life but I want to get with Abaqus/CAE only
kindly help me out.
how to obtain the crack initation life using abaqus only.
Thanks in adavance