++++ ++++ ++++ ++++ ++++
Concept Question
++++ ++++ ++++ ++++ ++++
What do you think the eigenvectors of the element sti?-
ness matrix represent?
1. a basis in which the sti?ness matrix would be diago-
nal (if rotated to that basis)
2. a set of nodal displacements for the element corre-
sponding to the physical deformation modes of the
element (rigid translations and rotation, pure shear,
pure stretching, combined shear, combined stretch-
ing, pure dilatation/compression, etc.)
3. nothing in particular, it’s just a mathematical con-
cept dissociated from any physical interpretation.
1. ++++ Statement (1)
2. ++++ Statement (2)
3. ++++ Statement (1) and (2)
4. ++++ Statement (3)
5. ++++ DKDU
The correct answer is ++++