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tension/compression assymetry problem in Abaqus

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.

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Evoution of Yield surfaces: Past and Future Trend - Part 3

 My last two posts on this series

Part- 1 (node/9016) and

Part- 2 (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.

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Evoution of Yield surfaces: Past and Future Trend - Part 2

Continuing on the work from the previous thread posted on

node/9016

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Evoution of Yield surfaces: Past and Future Trend - Part 1

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.

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Bilayer beam Bending

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

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2009 Nathan M. Newmark Medal

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

C S Desai

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.

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Change in Elastic Modulus with Plastic Deformation

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??

 

 

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Outstanding Scientists : New Delhi (India)_ CSIR

 

Oppurtunity for experience scientist and professors at

Council of Scientific & Industrial Research [CSIR]:

 http://www.csir.res.in/

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

You have a mission back home in India

India beckons leaders to push the Frontiers of Science and Technology

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