Hi Anup,
It looks like there's no constructor from which one can create a rank 4
tensor from a rank 4 symmetric tensor, nor an assignment operator. I've
opened up an issue on GitHub here
<https://github.com/dealii/dealii/issues/2679>. It looks like you'll just
have to copy out the entries manually for now.
J-P
On Tuesday, June 14, 2016 at 1:07:56 AM UTC+2, Anup Basak wrote:
>
> Hello all,
>
> I want to cast a 4th order SymmetricTensor<4, dim> to a Tensor<4, dim> and
> have used the following command:
>
> Tensor<4, dim> tens = Tensor<4, dim>(StandardTensors<dim>::II);
>
> where StandardTensors<dim>::II is the fourth order symmetric unit tensor
> defined in
> StandardTensors class (same as that defined in Step 44). However, I get
> error saying that
>
> cannot convert ‘const value_type {aka const dealii::Tensor<1, 6, double>}’
> to ‘double’ in assignment
> t[d][d] = data[d];
>
> I shall be thankful if someone can point out where it is going wrong.
>
> Thanks and regards,
> Anup.
>
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