Add a new feature for 2nd order symmetric tensor split #15920
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…t and a negative part split a 2nd-order symmetric tensor based on the signs of the eigenvalues obtained from a spectrum decomposition, also provide the corresponding 4th-order tensors that are the derivatives of the positive/negative part of the tensor with respect to the original tensor.
bangerth
requested changes
Aug 24, 2023
Change the output types of the two tensor functions as a pair and a tuple
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@bangerth All the suggestions from the code review are addressed. Please let me know if there are other required changes/updates. |
blaisb
approved these changes
Oct 18, 2023
bangerth
approved these changes
Oct 31, 2023
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/rebuild |
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Add two tensor functions for the split of a 2nd-order symmetric tensor into a positive part and a negative part based on the signs of the eigenvalues obtained from the spectrum decomposition. The function positive_negative_split() performs the positive-negative split of the 2nd-order symmetric tensor given as the input. The function positive_negative_projectors() not only performs the split, but also provides the derivatives (two fourth-order tensors) of the positive/negative part of the tensor with respect to the input tensor.
Committed files include
Tao Jin