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Abaqus supplies cohesive elements and several traction-separation laws
which can be used to study crack problems. In studying a mode I crack
problem (see Fig.1), the cohesive interfaces in front of the crack tips
(both sides) are represented by cohesive elements. The size of the bulk
material is taken as 6x6 mum and the size of cohesive elements is 2x2
nm (or 10x10 nm). The constitutive response in the cohesive element is
described by a triangle-type traction-separation law, where  maximum
stress or displacement is chosen as the failure criterion of the

Does anyone know anything about the life of V. V. Novozhilov, author of "Foundations of Nonlinear Theory of Elasticity"? Is he still living? Did he ever leave Leningrad?

Hello everyone

I need modeshapes for a tapered beam, so I am using Ansys. By going through the tutorials I found that a beam can be modeled by creating a line and meshing it using Beam elements and assigning real constants. How can I use the beam elements for a tapered beam where  the real constants are not constant. I tried to use tapered beam element but is of no use as it the created all elements of same real constants creating a profile similar to a hack saw. 

Can anyone please help me how to mesh a tapered beam.

Hi,

I am trying to use finite element modeling of indentation experiments
to extract hyperelastic material parameters. I am having a dilemma,
when the tissue has residual strain, the model couldn't achieve the
high nonlinear relationship between displacement vs reaction force as
measured in the experiments.



I have tried several strain energy potentials,

1) W=A/B*{exp[B(I1-3)]-1}

2) W=C10(I1-3)+C01(I2-3) 

3) W=C10(I1-3)+C20(I1-3)^2+C30(I1-3)^3

4) Arruda-Boyce type model