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Continuum mechanics - rate of work done in reference frame - indical notation doubts

Submitted by Ashesh Sharma on

Hi,



I have been stuck on this for a couple of days now. Could anyone please point out as to what am I doing wrong ?



I have seen the same derivation for the rate of work done,  in the book by holzapfel but it is not in index notation. 





Thank you

Question- Tangent modulus and secant modulus of concrete

Submitted by rajthilak88 on
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Dear all,

 can we say that initial tangent modulus and secant modulus can be considered as upper bound and lower bound limits for uniaxial compressive stress strain curve of concrete?

If so can u show me the literature proof for that?

 

Thanks

S Rajthilak

Urgent ---No figures in downloaded paper from imechanica.org---" C.E. Inglis, “Stresses in a plate due to the presence of cracks

Submitted by NITIN JOHRI on
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Dear Sir

  My user id is NITIN JOHRI. I have an urgent problem of not being able to understand downloaded paper

 

on account of No figures in downloaded paper from imechanica.org---"  C.E. Inglis, “Stresses in a

 

plate due to the presence of cracks and sharp corners".


Kindly provide/guide some solution, or link for
figures stated in paper(I am attaching this paper for your reference
from your site).

With kind Regards.

Thanks

Rotor dynamics

Submitted by Neda.km on
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Dear all, 

I am working on dynmaics and vibrational analysis of rotary equipments such as centrifugal pumps, Compressors and ...

I want to design and then investigate the stability of the rotary shafts, modal analysis,...

please guide me which of these softwares are better for this job (Ansys, Abaqus, Adams or Msc.Patran) ?

Sincerely Yours,

Ph.D Candidate

Multiscale modeling of nanocomposites

Submitted by Yogesh_Bisht on
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Hello folks

I am interested in doing multiscale modeling of nano-composites but don't know much about the field.

Can someone help me from where to begin and what text to refer.

Thanks. 

 

strain rate dependency in viscoplastic using *viscos material model

Submitted by vinay85 on

Hello,

i am trying for v shaped test rig.. thermo mechanical fatigue ... using *visous fucntion. unfortunatly my msg file says"error 11". can anyone help me?

the same material model works for single element perfectly.

anyone has clue about *creep function?