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Adding external vibration to a dynamic analysis

Submitted by Tsinuel on
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I am trying to simulate an experiment in which a steel plate is excited using sound vibration to measure its natural frequencies and vibration patterns. Even if modal frequency analysis of the test gave results, it was not satisfactory. Therefore, the external vibration with a controlled frequency is required to be included in the FEA model. FYI, gravity load will also be considered.

I would appreciate any help, specially related to ABAQUS. If there is no way of doing this in ABAQUS, suggestion of any other FEA software would be fine.

Thanks in advance.

Experimental characterization of the heat transfer coefficient for hot stamping/ press hardening applications

Submitted by bitamendi on
research
hot stamping
heat transfer
press hardening

Dear all, 

We just got published a new work titled " EXPERIMENTAL CHARACTERIZATION OF THE HEAT TRANSFER COEFFICIENT UNDER DIFFERENT CLOSE LOOP CONTROLLED PRESSURES AND DIE TEMPERATURES"

 

Linking Abaqus 2016 with Parallel Studio Composer 2016 +Visual Studio 2015

Submitted by farzin on
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Abaqus/Fortran
Intel parallel studio
Abaqus subroutines
Visual studio 2015
Abaqus 2016

Dear all,

Hi,

Any help on linking Abaqus 2016 with Intel Parallel Studio composer 2016 and Visual Studio 2015 would be appreciate.

(Note:I can't use older version of compiler as their producers (Microsoft & Intel) will not support liscence for older versions any more.)

Tq.

Farzin

Simulation of crack growth in Ni-based single crystals

Submitted by S. Beretta on
research
cracks
Crystal plasticity

In a cooperative research between PoliMi and UIUC we have analyzed the crack growth in Ni-based single crystals:

http://www.sciencedirect.com/science/article/pii/S0142112316000840

 Crack growth experiments analyzed with DIC had shown relatively low closure levels respect to polycrystals. Crystal plasticity simulations with WARP3D have been able to simulate closure levels consistent with the experimental ones.

Calculation of Elastic Modulus of Graphene in LAMMPS

Submitted by almuhib on
research

Hello everyone, I want to calculate elastic constants (C11, C22, C12, and C66) for a single layer graphene sheet by MD simulation in LAMMPS. I am using the following equation:

 

 E = (C11*C22-C12*C21)/C22 and poisson ratio = C12/C22 from this paper:

 http://www.sciencedirect.com/science/article/pii/S0261306909003082

Calculation of Elastic Modulus of Graphene in LAMMPS

Submitted by almuhib on
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MD
LAMMPS
fracture of graphene

 

Hello everyone, I want to calculate elastic constants (C11, C22, C12, and C66) for a single layer graphene sheet by MD simulation in LAMMPS. I am using the following equation:

 

E = (C11*C22-C12*C21)/C22 and poisson ratio = C12/C22 from this paper:

 http://www.sciencedirect.com/science/article/pii/S0261306909003082

Adsorption and Conformational Evolution of Alpha-Helical BSA Segments on Graphene: A Molecular Dynamics Study

Submitted by Jingjie Yeo on
research
graphene
bovine serum albumin
adsorption
molecular dynamics
alpha-helix
Protein
Protein dynamics

http://dx.doi.org/10.1142/S1758825116500216 Molecular dynamics (MD) simulations are performed to investigate the adsorption mechanics and conformational dynamics of single and multiple bovine serum albumin (BSA) peptide segments on single-layer graphene through analysis of parameters such as the root-mean-square displacements, number of hydrogen bonds, helical content, inter- action energies, and motions of mass center of the peptides.

Negative Poisson's Ratio in Single-Layer Graphene Ribbons

Submitted by Harold S. Park on
research
graphene
2D materials
auxetic
Negative Poisson's ratio

The Poisson's ratio characterizes the resultant strain in the lateral direction for a material under longitudinal deformation.  Though negative Poisson's ratios (NPR) are theoretically possible within continuum elasticity, they are most frequently observed in engineered materials and structures, as they are not intrinsic to many materials.  In this work, we report NPR in single-layer graphene ribbons, which results from the compressive edge stress induced warping of the edges.

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