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modulus of elasticity

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Posts: 4
 Mol
Topic starter
(@Mol)
New Member
Joined: 16 years ago

How do I find modulus of elasticity of Silicone or Viton if I know some constitutive model such as Mooney or Ogden.

I read from some literature that E=6(c1+c2). Is it correct or any other emperical formula is available.

-Elango

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Posts: 3998
(@jorgen)
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Joined: 5 years ago

There is no universally acceptable definition of the Mooney or Ogden model 🙁
Different FE programs define the parameters slightly differently.

What definition or FE program do you have in mind?

- Jorgen

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Posts: 4
 Mol
Topic starter
(@Mol)
New Member
Joined: 16 years ago

How to find E?

Iam working on robot soft finger manipulation. Iam studying Silicone, Viton and Neoprene for developing fingers.

I have developed an anlaytical equation, which relates contact force with deformation and E.

If we measure deformation experimentally, contact force would be known from the equation.

I understand that E is not available for such materials and only constitutive models are being used.

But, I need to know E for such materials to have the direct substitution in my equation.

With thanks,

Elango

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Posts: 25
(@longcar2000)
Eminent Member
Joined: 16 years ago

neoprene properties

Neoprene Material Properties in ANSYS WORKBENCH

NEO-HOOKEAN

INITIAL SHEAR MODULUS G=0.027104456 Mpa

INCOMPRESSIBILITY PARAMETER d=0.14429\

Attached file may help for other materials too.

Nandish RV

ME-Machine Design

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Posts: 4
 Mol
Topic starter
(@Mol)
New Member
Joined: 16 years ago

stress-strain data

thanks Mr.Nandhish.

it is useful to me.

I need true stress-true strain experimental data for Silicone, Viton and Neoprene as well.

could you help me.

-Elango

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Posts: 4
 Mol
Topic starter
(@Mol)
New Member
Joined: 16 years ago

experimental data for silicone and viton

hi every one,

I need experimental load-deformation data for silicone and viton.

With thanks,

Elango

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

You might want to take a look at this [URL= http://polymerfem.com/index.php?pageid=mat_mod ]page[/URL].

-Jorgen

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