[Libmesh-users] Why using DenseSubMatrix to assemble Ke?

[蔡园武 <yua...@gm...>]

**
Dear developers,

I found that all examples used DenseSubMatrix to assemble stiffness matrix,
something like Kuu,Kuv,Kvu,Kvv. I used to do like that, but recently I
tried to assemble Ke directly, not using DenseSubMatrix, and I found the
result is the same as using DenseSubMatrix. So why all examples use
DenseSubMatrix to assemble Ke? Is it a consideration of efficiency or
something else?

Thank you!

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Cai Yuanwu  蔡园武
Dept. of Engineering Mechanics,
Dalian University of Technology,
Dalian 116024, China