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Rotating disk -- Spin Softening -- Ansys/Abaqus

Submitted by srihari on

I have been told about "Spin Softening" option for rotating cylinders in Ansys but did not really understand how/what/why. I have gone thru Ansys documentation and it appears that the centrifugal loads are applied to the deformed configuration if the Spin Softening option is selected. Does Abaqus have a similar option ?

Now what the "Spin Softening" is meant to do is apply a centrifugal force:

F(r) = density*(r+u)*speed^2

Research Fellowship/Assistantship Opening at Utah State University

Submitted by Anna Y Xue on

Post-Doctoral Fellowship: Looking for energetic researchers with strong background in constitutive modeling or multiscale material simulations. Specialty on fatigue and fracture of metals, polymer or short fiber composites is a plus.  The primary research will be focused on physics-based damage, fracture, and fatigue modeling and simulations at various scales.  If interested, please contact Dr. Yibin Xue via email or visit her website.

Deformation 'Gradient', Right/Left Cauchy Green Compatibility

Submitted by Amit Acharya on

I post some (hand-written) notes on compatibility conditions for both small and finite strains that I have used for helping me in lecturing. These may be useful for our student friends on imechanica. I also post a paper on compatibility conditions for the Left Cauchy-Green field in three dimensions as well as the paper by Janet Blume on the same subject.

Strain compatibility equation in non-linear solid mechanics!!!

Submitted by ramdas chennamsetti on

We have six strain compatibility equations, which are obtained from strain-displacement relations by making an assumptions 'small strains'. Strain compatibility equations ensure a single valued and continuous displacemnet filed. These equations are used in stress based approach.

Now my queries are as following.

[1] Do we have strain compatibility equations for non-linear strain-displacement relations?

[2] Do we follow stress based approach in non-linear solid mechanics.