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CauchyGreenStrain #270

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softmattertheory wants to merge 1 commit into dev from cgstrain

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softmattertheory commented Jun 27, 2024

Makes the Cauchy Green strain tensor:

C = (F G - 1)/2

where:

F is the gram matrix in the deformed frame.
G is the INVERSE of the gram matrix in the reference frame.

C vanishes if the deformed and reference frames coincide.

You must supply a reference mesh to your Integral constructor; you can then call cgtensor() within an integrand:

fn integrand(x, f) {
   var cg = cgtensor()
   return cg.trace()
}

var a = AreaIntegral(integrand, phi, reference=mref)


          CauchyGreenStrain

6b7b912

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