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Elastic Bounds of Bioinspired Nanocomposites

Submitted by Zuoqi Zhang on
research
bioinspired composite materials

 Biological materials in nature serve as a valuable source of inspiration for developing

 novel synthetic materials with extraordinary properties or functions. Much effort to date

 has been directed toward fabricating and understanding bio-inspired nanocomposites

 with internal architectures mimicking those of nacre and collagen fibril. Here we establish

 simple and explicit analytical solutions for both upper and lower bounds of the elastic

MAXPS Damage

Submitted by Priyan on
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Fracture Mechanics Forum
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fracture propagation
MAXPS damage

Hi everbody,

 

I am trying to study about carck propagation in a material. The part is 2D deformable and I am going with XFEM for the analysis. 

Can you please tell me how to calculate the MAXPS damage under Damage for Traction Laws?

 

Elastic Modulus of the material: 0.031 (Newton per micrometer square)

Load: 0.15 um displacement in the 'x' direction = 1.2245e-3 N in the x direction

 

I am using Abaqus /CAE 6.10

 

Any kind of help will be appreciated.

 

Thanks

Ultimate Linear Motion Mechanism For Clean Energy

Submitted by Jigar Y. Patel on
research
research
linear motion mechanism
clean energy
Renewable Energy

 

 

I apply force using one slider to another slider. Best part is one slider move little bit and help second slider to slide 6 times length at 70 % force.

Energy Used to move first slider=force*distance

=100N*0.05m

=5Nm

Energy Get on Other Slider= Force*Distance

=Force applied by first slider*cos(45`)*distance

=100*0.7*0.25

=17.5

We get 3 times energy on second slider than we use to move first slider.

Seminal research work: in-situ mechanical testing under electron microscope

Submitted by Amit Pandey on
research

A lot work has been done/published in the area of in-situ mechanical testing using electron microscopy. Please list which, according to what you feel has had a significant impact. Here are two in my opinion:

 Uchic, M. D., Dimiduk, D. M., Florando, J. N., & Nix, W. D. (2004). Sample dimensions influence strength and crystal plasticity. Science, 305(5686), 986-989.

Displacement Controlled test using Boundry Condition Module in ABAQUS

Submitted by engr_adil on
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Computational Mechanics Forum
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Salam everyone,

I am working on Modeling of a Brick Wall Panel under reverse cyclic load with a concrete lintel at the top.

i need help regarding displacement controlled test in abaqus. there are a total of 24 cycles . . . first four cycles are force controlled (whose frequency is 1/60Hz) and the rest 20 are displacement control (whose frequency is 1/120Hz) . . . the following is the data file . . .

Looking for a Postdoc position in the filed of vibration aided fault diagnosis

Submitted by behrang on
research
fault diagnosis
acoustics and vibrations

I am going to finnish my Ph.D. of mechanical engineering with a thesis in the field of vibration assisted fault diagnosis in about 3 months. My main field of research is vibration and I have worked extensively on gear systemes vibration modeling and diagnostics. 

Currently I am looking for a postdoc position at which I can continue my researches in the abovesaid fields.

my Email address is b_hoseini [at] kntu.ac.ir

Thanks

Atomistic Mechanism of Phase Boundary Evolution during Initial Lithiation of Crystaline Silicon

Submitted by Dibakar Datta on
research
Li-ion battery
molecular dynamics
LAMMPS
Vivek Shenoy
materials science
Brown University

 

 

 

 

Atomistic Mechanism of Phase Boundary Evolution during Initial Lithiatio of Crystaline Silicon

The Journal of Physical Chemistry  [PDF]  

EST method with GNU Octave

Submitted by Andres Lahe on
research

The EST method -- http://www.e-uni.ee/e-kursused/estmethod/ -- http://digi.lib.ttu.ee/estmethod/ESTmethod.pdf -- is a general computational method, for solving boundary value problems for the structural analysis of frames, beams, and trusses. Differential equations are considered here together with a set of boundary conditions.  Compatibility equations for joint displacements and equilibrium equations for member end forces at joints serve as boundary conditions.

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