STIFFNESS MATRIX

Amith Anoop Kumar

Why is the stiffness matrix always said to be symmetric?

Rahul_P1

Hi

This is only for linear elastic situations due to Maxwells Reciprocal theorem, A symmetric stiffness matrix shows the force is directly proportional to displacement.

Have a look at https://altairuniversity.com/free-ebooks/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/ and other basic FEA ebooks.

Rahul_P1

Hi

This is only for linear elastic situations due to Maxwells Reciprocal theorem, A symmetric stiffness matrix shows the force is directly proportional to displacement.

Have a look at https://altairuniversity.com/free-ebooks/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/ and other basic FEA ebooks.

Amith Anoop Kumar

Rahul Ponginan_22560 said:

Hi

This is only for linear elastic situations due to Maxwells Reciprocal theorem, A symmetric stiffness matrix shows the force is directly proportional to displacement.

Have a look at https://altairuniversity.com/free-ebooks/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/ and other basic FEA ebooks.

Thanks Sir