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Constitutive Matrix for Viscoelasticity

Submitted by shrimad on
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Hi,

 

Can anyone please tell me the constitutive or the 'C' matrix  for a linear viscoelastic material model (with no relaxation in bulk)? I have been using the one outlined in the Computaional Mechanics book by Simo and Taylor, but I feel that ANSYS is using a different matrix as my results are different from ANSYS. I could not find details about the 'C' matrix for a viscoelastic material anywhere else. Any links too might be helpful.

 

Thanks,

Shriram

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Look for a postdoc or research position in structural engineering

Submitted by shaochj on
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damage mechanics

My research interest focuses on concrete damage constutitive model and its numerical implementation, performance-based seismic design of bridge structures, variational integrand method and conservative propertied of irreversible process, methmatical base of damage theory .Now I work as a postdoctoral research till Sep. 2009 at Tongji University, P R China.  My current research are supported partly by China Postdoc Fund Committee and Shanghai Postdoc Fund Committee.

defining a node and element locations while meshing a volume

Submitted by mharoon on
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Hi,

 

     I am trying to model a piezo disc bonded to a steel plate for lamb wave simulation. I am currently modeling the piezos as rectangular with nodes coincident with the plate nodes and just coupling them. I would like to do that with a circular geometry for the piezos, but for that I need to define nodes in the disc that coincide with the plate nodes. How can I do that? Can I define my own node locations in a volume for meshing? Thanks in advance for your help.

 

Muhammad Haroon

International Journal of Novel Materials

Submitted by Teik-Cheng Lim on
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Announcement of a new journal

A new journal in Materials Engineering, with emphasis on mechanical properties, will be launched this year.

 

The home page is at:

 http://www.serialspublications.com/journals1.asp?jid=438

 Author instruction can be found at:

http://www.serialspublications.com/journals1.asp?jid=438&dtype=1&jtype=

Online submission at:

Journal Club Theme of January 2009: Impetus for Cell Mechanics

Submitted by Rohit Khanna on
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biomechanics

Welcome to the January 2009 issue. This issue addresses the important discussion on cell mechanics. Acute need to study cell mechanics is driven by the fundamental goal of tissue engineering i.e. to make tissue engineered constructs that can mimic the environment for tissue regeneration with a potential to replace the biological functions of damaged organs. There is now worldwide activity in the in vitro regeneration of tissues including nerve, liver, bone, heart valves, blood vessels, and kidney.

Post-doctoral postion in Mechanical Engineering at NUS

Submitted by Shailendra on
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mechanics
job opening
post-doc
Computational Modeling

I have an opening for a post-doctoral position starting early next year (Jan 2009) in the broad area of multi-scale mechanics of nano-crystalline (nc) materials. The focus will be on microstructure mediated failure processes in nc materials primarily using continuum mechanics based approaches, but informed by materials science.

If you are interested, please send me (shailendra[at]nus[dot]edu[dot]sg) your CV and the names of at least two references.

Thanks,

~Shailendra

Modeling anisotropic hyperelastic material

Submitted by A.Jabary on
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Recently I work on Finite Element Modeling of human eye .  And focus on cornea .( the outer transparent layer of human eye) . Based on Its structure which consist of collagen fibers I have to use the Anisotopic hyperelastic model . And I derived the coefficients of
strain energy function which divided into three terms of :  volumetric,isotropic and anisotropic



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