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PhD thesis Evaluation

Submitted by kirthanlj on

Sir,

one of my students is working on PhD topic " Study of cold hole expansion and evaluation of fatigue properties on critical aerospace components". His work has to be reviewed by professor of non indian origin in foreign universities. I request you to kindly help this student. If you are interested, let me know, so that I will ask my university to contact you in this regard.

Thanks

Kirthan.L.J

Breakdown of structural models for zigzag single wall carbon nanotubes

Submitted by rbatra on

The following article shows that the linear elasticity theory does
not predict well inextensional modes of vibration of a single-wall
zig-zag tube.

 Gupta, S.S., Bosco, F.  and 
Batra, R. C. (2009) Breakdown of structural models for vibrations of
single-wall zigzag carbon nanotubes, J.
Applied Physics,
106,
063527.

 

Brittle Failure damaging material model in Abaqus

Submitted by lalitthakur23 on
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Hello everybody i m working on a project Fem erosion analysis of brittle ceramic material using Abaqus/Explicit . I know for brittle material especially Jhonson Holmquist model is best suited , but unfortunately its not available in abaqus . So finally i decided to go  with brittle cracking criteria . Can Anybody helpme to use this criteria of brittle cracking

I need parameter of this criteria like

1 .Brittle Cracking >> Type GFI>>1 . Failure Stress 2. Mode I fracture energy

Finite elements based on shell theories

Submitted by ranababu on
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Hello,

 

Recently I faced two questions in course that I am attending:

 

1) Outline the salient features of different higher order shell theories.

 

2)Explain why some shell theories are not suitable as the basis of element formulation.

 

3) Discuss any limitations of elements being used in relation to their underlying formulation ( e.g use of shallow shell theory or cylindrical shell theory).

 

"Classics" in iMechanica

Submitted by Jayadeep U. B. on

Dear all,

While reading some "old" discussions in iMechanica, I have come across
a blog by Zhigang to have a collection of "classics" in iMechanica. 
Immediately, I searched for such a section, but couldn't locate it.  Is
it ever made?  If not, why not start it now?  I am sure there will be
many juniors like me, who are eager to read those classics.

Finding Books

Submitted by asit_rathod1 on

Hi all

I want to Find Books For Non Linear Stress- Strain Curve,which Gives more Idea About the Plastic Region,and terms of Tangent modules(E_t) nad secant modules(E_s)...plz do needful and Reply...

Yours faithfully

Asit

 

abaqus

Submitted by kisku on
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dear all,

i wanted some codes used in ABAQUS to solve the dynamic problems:

1.Blunt and Hemispherical projectiles hitting the plates.

2.When the plate is perforated by the high velocity projectiles.

hope someone will help me.

regards,

-Sanjay