Abstract

In continuation of our work on yield surfaces

Part- 1 (http://imechanica.org/node/9016)

Part- 2 (http://imechanica.org/node/9073) and

Part- 3 (http://imechanica.org/node/9103) 

Hello all

 I am trying to model a composite material with different tension and compression modulus (elastic analysis).  Does anyone know how to do it ??

Thanks for help.

 My last two posts on this series

Part- 1 (http://imechanica.org/node/9016) and

Part- 2 (http://imechanica.org/node/9073)

were mainly focussed on the tension–torsion (σ11–√3σ12) stress space. This paper will be the final post on this series and will focus mainly on the behavior of  both of these alloys under tension–tension (σ11–σ22)space and conclude this ongoing research.

Abstract.

Continuing on the work from the previous thread posted on

http://imechanica.org/node/9016

 Results are presented on the evolution of subsequent yield surfaces with
finite deformation in a very high work hardening annealed 1100 aluminum
alloy. In Part I [Khan, A.S., Kazmi, R., Stoughton, T., Pandey, A.,
2009a. Evolution of subsequent yield surfaces and elastic constants with
finite plastic deformation. Part 1: a very low work hardening aluminum
alloy (Al-6061–T6511) 25, 1611–1625.] of this paper, similar results are
presented for a very low work hardening aluminum alloy.

It is essential to know the amount of springback for a given forming process, so that the process or the design of the tool can be modified to obtain the desired product shape. This requires a comprehensive understanding of loading and unloading processes, and determination of elastic constants with finite plastic deformation which, in turn, require precise determination of subsequent yield surfaces.

Where to get information on the Mechanics of Bilayer Beam bending for  Bridge & Cantilever beam?

C. S. Desai Is Recipient of the 2009 Nathan M. Newmark Medal

http://www.u.arizona.edu/~csdesai/

Regents’ Professor Chandra Desai has been awarded the 2009 Nathan M.
Newmark Medal by the Structural Engineering and Engineering Mechanics
Institutes of the American Society of Civil Engineers.

http://www.asce.org/pressroom/honors/winners/?w=newmark

Article on web

http://www.eng-tips.com/faqs.cfm?fid=1441

The physical basis of material
properties like Young's modulus can be understood by examining
materials on the atomic scale. There are two main things that influence
the value of the modulus:

1.)     The atomic microstructure
2.)     The interatomic bonds.

 So, what is the reason of change of elastic modulus with plastic deformation? Any References??

Oppurtunity for experience scientist and professors at

Council of Scientific & Industrial Research [CSIR]:

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http://www.nature.com/naturejobs/science/jobs/93864-Outstanding-Scientis...

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Invitation to join the Google group  Mechanics: Modeling, Experimentation and Computation