Question

In Skyline matrix, the elements in a stiffness matrix can be placed in _______

(a) Direct values

(b) Determinant values

(c) Load values

(d) Vector form

I had been asked this question during an interview.

I need to ask this question from Assembly of Global Stiffness Matrix for the Banded & Skyline Solutions topic in section Trusses of Finite Element Method

Answer 1

Right option is (d) Vector form

Best explanation: In skyline matrix storage, or SKS or, variable band matrix storage or, envelope storage scheme is a form of a sparse matrix that reduces the storage requirement of the matrix more than banded storage. In skyline approach, the elements of K^e are placed in a vector form  with certain identification pointers.