Eng-Tips is the largest forum for Engineering Professionals on the Internet.

Members share and learn making Eng-Tips Forums the best source of engineering information on the Internet!

  • Congratulations JStephen on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

non-Positive definite stiffness matrix

Status
Not open for further replies.

soildynamics

Civil/Environmental
Joined
Jun 16, 2007
Messages
44
Location
CA
If the determinant of a matrix is positive , does that mean that the matrix must be positive definite
 
Absolutely no.
The definition of the possitive definite matrix is the following
For every x (vector) x'Ax>0
which means possitive eigenvalues
no positive determinant


Dr. Costas J. Tsaprounis
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top