#### dRic2

Gold Member

- 491

- 83

$$ -[ \mathbf \epsilon \mathbf : \mathbf \tau ] $$

Where ## \mathbf \epsilon ## is a third-order tensor and ## \mathbf \tau ## is the stress-tensor.

Then the authors say:

What "bulk angular momentum" is? I don't understand, why there are two angular momentum?If, on the other hand, ## \mathbf \tau## is asymmetric, then the last term describes the rate of conversion of bulk angular momentum to internal angular momentum.