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strain rate

Amit Pandey's picture

Negative to positive strain rate sensitivity in 5xxx series aluminum alloys

In continuation to our previous work on 5xxx series Al alloys

Experimental and numerical investigations of yield surface, texture, and deformation mechanisms in AA5754 over low to high temperatures and strain rates
node/14353

Naming of an "Epsilon Dot Zero" And a "Reference Strain Rate" of J-C Parameters in Abaqus/Explicit

Hello,

 
I'm a little bit confused with a naming convention of strain rates of Johnson-Cook plasticity and damage model in Abaqus. In J-C equations there are two parameters:  

  • ε.0 (epsilon dot zero) known as a reference strain rate which has the value of 1 s-1,
  • ε. (epsilon dot) known as the plastic strain rate or the effective strain rate [s-1].

In Abaqus (Edit Material window), there are two parameters with the same(?) name:

Effective strain rate and strain rate in ABAQUS subrotine

Hi there,

would you please tell me how can I use or calculate the effective strain rate or strain rate in ABAQUS subrotine?

 thank you!

Imposing strain

I would like to simulate the response of a metal to a slow strain rate test. So I need to impose the strain.

It is possible to impose strain with abaqus or can we just apply load?

Thank you

SC 

 

L. Roy Xu's picture

A pool filled with non-newtonian fluid

They filled a pool with a mix of cornstarch and water made on a concrete mixer truck. It becomes a non-newtonian fluid. When stress is applied to the liquid it exhibits properties of a solid. Video was recorded at Barcelona, Spain.

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