Dear friends,
I've recently stepped into dealii. While I appreciate it's capabilities and
so on.. I want a starer
code for my simple structural mechanics problems.
Can someone give me a simple code for a rectangular column buckling problem
in 2D or 3D,
It's an eigenvalue problem...
Thanks for

Dear Dr.Bangerth,
I found it just before, it is on the page of FEValuesView (
https://www.dealii.org/current/doxygen/deal.II/classFEValuesViews_1_1Vector.html).
Thank you very much!
Best regards,
Yuesu
On Mon, Sep 7, 2020 at 11:00 PM Wolfgang Bangerth
wrote:
> On 9/7/20 6:21 PM, yuesu jin

On 9/7/20 6:40 PM, Jimmy Ho wrote:
I have a general question regarding the application of periodic boundary
conditions in Newton's method when solving nonlinear equations. Should the
periodic constraint be applied to the incremental Newton update, or directly
to the total solution vector?

On 9/7/20 6:21 PM, yuesu jin wrote:
I want to contract the gradient tensor with another vector, such as
T_ij*n_j, the gradient tensor is d_j u_i (d is the partial differential
operator). I am wondering what is the first index of gradient tensor, i or j?
I believe it is
T_ij = d_j u_i
I

Hi All,
I have a general question regarding the application of periodic boundary
conditions in Newton's method when solving nonlinear equations. Should the
periodic constraint be applied to the incremental Newton update, or
directly to the total solution vector?
Thanks in advance for any

Dear all,
I want to contract the gradient tensor with another vector, such as
T_ij*n_j, the gradient tensor is d_j u_i (d is the partial differential
operator). I am wondering what is the first index of gradient tensor, i or
j? Thank you !
Best regards,
Yuesu
--
Yuesu Jin,
Ph.D student,